Hello, This may be late but here is my dream Cyberpunk RPG Video game. In no particular order.
Style over substance: Make style matter. Are you walking around in full metal gear? Do you have an assault rifle over your shoulder? People are going to notice. In the city proper, they should call the cops, in the combat zone, all the gangs are on alert. Also have NPC's react to your style. Are you wearing corp style in the combat zone, boosters mock you. Wearing Gibson Gear in the Corp Zone, Corps challenge whether your are cool enough to get away with wearing it. Style should mean something.
Make weapon concealment matter: A big problem I had with Deus Ex is you are walking around with enough fire power for a squad of marines and nobody seems to notice. You're not going to stick a Colt AMT 2000 in a pocket, it needs to be in a shoulder holster to be hidden, Sub machine guns need a long jacket, and just some weapons cannot be concealed.
A more realistic inventory system: E.Y.E. Divine cybermancy had an interesting spin on the grid inventory system. Instead of one large grid where everything goes, the grid was split up based on location where you were carrying things. so you could have a 1 X 2 box on each lower leg were you could stick a magazine of ammo, or a knife, a 2 x 2 for your pockets on your jeans were you can stick a few mags, a grenade, or a pocket pistol, a 2 x 3 on your thighs if you have a holster or cargo pockets were you can put larger hand guns, or a smaller SMG. You could have a 2 x 3 under you arm for a SMG or heavy pistol. Connect the boxes to the type of clothing you are wearing but make sure people notice. Like carrying a back through the combat zone might not be out of place, but you're not going to have a backpack at a corp party which mean depending on where you are going you have to change clother, that changes inventory space that changes the load out you are carrying.
Make ammo types real: This makes it so you need to make sure you bring enough ammo for your guns, because the guys you are taking down might be using 9mm pistols while you are using 12mm. Don't make generic ammo types that work in every type of gun of x type. I.E. pistol ammo works in all pistols.
Require different attire / load outs for different type of jobs: You've been hired to body guard at a corp party, you don't show up in a long coat with your FN and metal gear under it. You need a suit, with jacket and have to settle on inconspicuous body armor and your H&K 2020 with collapsible stock. Heading to the combat zone for a full on guns blazing assault, time to break out Ronin light and metal gear.
Make cyber psychos real and have it effect interactions: As you gain more cyberware your human interactions should suffer. Sure no one is going to slight you for having a cyber eye, smart links, some augmented hearing. But if you come in with heavy sub dermal armor, every limb decked in chrome and a metal plate for a face, people should be Leary to talk to you. When you start getting low enough have the character start getting ticks, have random voices or sounds pop up, hallucinations, make the metal really bite into the mind.
Customization: Weapons should be customizable. CP2020 has several books full of customization for weapons, gear, clothes, from extend magazines, to compact gun builds, to armored clothing, and sell it all through Chrome books and Solo of Fortune! Your character should be fully customization. Height, weight, race, gender, orientation, native language, the works.
Location based damage with location based armor: This is a must have if you are going to a cyberpunk rpg.
A home: Whether it be a road home armored RV, a coffin in a hotel, or a corp penthouse you need a home that you can buy style for, and defenses to. If you f*^k up enough in game have an enemy try and hit you there and mess up your home.
Co-Op! : Again referring to E.Y.E. Cybermancy, have one person play the main character but allow friends to tag along as your edge runner group, cop patrol, or corporate team. Two at least but up to four for some LAN fun.
All the cyberware: Mr Stud and Midnight lady included.
Bio Ware: Come on, you know some players want animal ears and a tail :-D, seriously though for more cash some genetic engineering for less humanity loss.
Relationships: From your friend on the force, to your input back in your apartment allow the main character to build relationships that matter. Have friends ask for help and if you have been a good enough bud, when you ask for some extra scratch or need an extra man for a job they help out. Some serious romance options would be good too.
Make the NPC security / enemy react like real people would: An alarm was tripped? Even if the security guards can't find what set it off for the rest of the night they are on increased alert, they pull out body armor and heavier guns, start walking in pairs. And have check in times. Low end security might only check every hour, but high end firms will check every ten minutes and if you take a guy out, and he doesn't answer his check, everyone kicks up their alert status. Again breaking out heavier gear, moving in teams and looking for their downed man. If they have been wounded or there is a s#$t load of gun fire coming their way, have them run for it or fall back to other rooms. And have realistic off site reinforcement time, even if an alarm goes off, it often takes several minutes for off site reinforcement to arrive, none of this alarm goes off and a hundred guys out of nowhere show up. Decide how many guys are at a place and that is how many guys there are, and if an alarm goes off character has x time to get the job done or get out of there before off site security shows up. That being said...
Allow for failure on jobs: Job goes south or someone lied to be about the job I should have the option to abort and get out of there. So I don't get my full pay and depending on the situation I might be pissed at the fixer who gave me the job for lying, but he tries to make it good, or he's pissed because I fubar'ed the job and now I have to make good, but allow for failure or less than perfect outcomes. More so sometimes you get into things that aren't even a job, your ambushed by boosters that are pissed at you, allow the option to run away.
Don't f%*k up Netrunning: So many games have taken shots at hacking and have failed. The hacking in Deus Ex sucked and was one of the worse parts of the game. Netrunning is a signature feature of cyberpunk, but that being said make it real time. You're in the net, s$*t's still happening outside and if you don't have home security or bro's covering your back you could get iced while in the net.
Choices in action and life style: Do you run lean and mean or with crystal and chrome, guns over cars, armor over stylish clothes, Cyberware over that penthouse apartment. Do you eat kibble so you can keep up on your trauma team coverage, or do you chance letting your coverage slip to afford that next customization on your gear. Did you scoff at that corp's job offer, he doesn't forget it and you might just find yourself with some extra visits from the cops. You gun down someone and the cops pay you a visit asking if it was self defense, hope you have a gun cam, or a record feature on your cyber eye, unless you are of course guilty. Piss off your girl friend, she gets her netrunner friend to clear out your account. Make your actions effect your life style, and have side effects to your actions, big and small.
Have you class determine your game: Corps and Rockerboys are more social characters and should have a more social style game. Nomads and Solo's are more combat aligned. Media and cops are more investigative types. Med Techs, Techies, and Netrunners could go all over the place. Use the character class to help tailor the style of game. It will allow for more replay ability, especially if each class has different side missions, opening story and background.
Allow for multiple types of solutions: Whether it is going off site and talking to an enemy gang of the mob boss you need to get out of your way, sneaking up to a transmission tower and hacking in to intercept the data you need, or just a good old fashion seal team six style op, there should be multiple ways to deal with each job or encounter, of course modified by the skills and build of the character. Now sometimes you can't talk your way out of the gun, fight, but you should the heck could have talked that nomad group into backing you up when you knew one was going to show up.
Trauma team: If I pay for trauma team coverage and I get shot up and I am not in a no fly zone, I want to be able to snap my card and in one to two minutes have an AV with an assault team over head to pull my ass out of the frying pan I am in and rushing me to the nearest hospital.
No health regen: At least not the super fast one you see in like Dues Ex and Halo. You get some first aid to help get some health back but only a hospital, expensive nano healing or repairing cybernetics get you back to 100%
Crystal Palace: I want to go to space! if only for a visit.
Nudie cards!: My wife loved collecting the nude cards like from witcher 1. :-D
The Corporate war!: Shadow war to the full blown Firestorm, whether the main character plays the fringes staying out of the main fighting, or decides to get stuck right in this needs to happen the big M verses the big A, come on you know you want too.
Power Armor and full conversion borgs!: Even if we don't play them or even fight them we need to see them at least once. And if we have to out smart, out talk, or take them on even better. Oh and we've got to see a Dragoon!
Hard Core Mode: You have one save and if you're iced your iced. All choices and actions are final. This optional mode is a must have for hard core gamers.
Either the City or the World: I either want all of Night City, every street, alley, bridge, building, combat zone, tree, AV the works, or I want to see the world, visits to Paris, UK, Canada, Mexico, Crystal Palace. If I can have both even better!
Skill based system: Obviously if I am a sole I am good with guns, but with some skill points, I can also work on cars, leave room for a little variation between characters.
No invisible walls: Let me climb that chain link fence, go over that wall, bust through that window, unless there is a cliff or hell fire, stopping me I want to be able to go there. Now I might be shot doing it but I want the ability to go there.
Unique NPC's: Enough variations between the background NPC's that they don't all look like they came out of the cloning vat.
Good Story: Read the cyberpunk classics and don't do some weak half ass Hollywood knock off or politically correct rehash. Full, listen up you primitive screw heads, maximum metal, Euro tour levels. Cyberpunk was no holds barred and your story should be that way. You can have a nod to a classic but make your own story and make it a story that utilizes the video game medium to the max, not a 'I wish I was making a movie' story that we are prisoners of.
As a fan of the Witcher series I know you guys have the skills, and you can do this right, and I don't mind waiting until 2020, to see the video game that Cyberpunk deserves, and blows Deus Ex out of the water.