Some of the things I wish to suggest might have already been listed by others in this thread, but i'll put them up anyway to further stress on their importance, also I apologise for the long post but i'd like to be as detail as I possibly can be, as the game imo has a lot of potential.
1.
Story
Some parts of the story needs more depth, Jackie needs more depth. I keep asking myself about "How many missions did i play with Jackie now?" cuz Jackie as a prime example was literally only created to guide the player into the heist and die but the game tells you that your character was emotionally attached to him as a 'Best Friend'. The heist felt like a rough diagram put to play. A heist, that too against the biggest corporation in night city.. needed a longer preparation, more trust, instead Dex just hands the player with a grand mission straight. Simply put, the heist doesn't justify as 'Dexter: Ay yo, fetch me my bot from maelstorm > after bot mission> aight we're ready for the heist
(not counting the BD roll as a mission because honestly, that mission was a BD tutorial nothing more, although it was kinda important to know the environment. Could have had a 'fetch me this or talk with that' mission for Evelyn right after)
2.
Affiliate
The player should be able to go solo (like current original gameplay, although V is secretly a Mox ally) or join/leave groups like Mox, Tiger Claws, 6 street, Valentinos etc. Get calls from either fixers or gang leaders for turf wars, take over parts of night city with gang etc (these can be optional time limited jobs, thus stating an ever changing environment and how the player can be involved in making these change happen). This could but is not limited to, let the player be able to recruit ranks of companions (i would say 1 companion and at highest reputation, player can recruit 2), type of companion might go from stealth melee, to assault, netrunner (hack access points, quick hack enemies, deal with camera and alarm for the player, but dies easily), techie(open doors and other tech level objects etc for the player, but dies easily). This entire process can also be one of many ways to earn 'Street Creds'
3.
Relationships
Currently the romance relationships feel shallow, its like grind to a romance scene followed by series of lovey texts etc. Why not implement gifting? the npc you are in love with, might just occasionally send you a generic text stating they left something for you at your owned apartment. Random guns, clothing or just few eddies. Alternatively, player should be able to gift back as well with guns(if player can recruit partner as companion) or just clothing(visible change to NPC partner ) or just a pizza. These may not have an impact to the relationship, but gives the players something to do other than just grind to a romance scene then wait for game ending. The gifting idea can be one of many that makes the player return to the initial apartment as we all know, that apartment suite as of now is literally useless.
4.
Property Purchase
Ability to purchase a new house, i mean c'mon even Jhonny doesn't like V living and roaming around in piss smelling places, also i'm sure most players have their eyes set on 'North Oak Estates'. In every sector of Night City, players will have to earn 'Street Creds' by being involved with fixer and gang leader(if implemented), each sector of Night City should have a property which player can own. Properties should be priced much higher than buying an average car, with North Oak property being at least 4 times as expensive as a Rayfield Aerondight, but none of the property should be as grand as the final mansion, as that might make the chosen ending scene seem petty compared to what you might already own elsewhere. Players should also be able to customise the interiors, if they want. I personally am not sure if customising or having a feature to ask romantic interest to move in with V, makes any sense.. but i'll put it out as a suggestion anyway.
5.
Reputation
Conversations can be affected by players reputation as an individual or by the faction the player represents, current street cred system imo is lame, i can literally have 50 street cred before the heist and all that gets me is better items and cars. There is no reputation, the last time I talked my way out of a bar fight was with high 'Body' level. I personally think it would be better to leave the attributes to actions and conversations to 'Street Creds' or if implemented 'Faction Reputation'. For example: You walk into El Coyote Cojo, you notice a man being bullied by Valentinos, here instead of 'body' attribute trigger special dialog, reputation with valentinos to trigger special dialog could be better. Where does that leave us with body and other attributes? attributes are already requirements for weapons, cyberwares, locked doors etc.
6.
AI
This is currently the brightest problem out there, Crowd needs an AI, npcs need to run from a fight, crowd needs to react more, from coward to aggressive, from 'Run for your life' to hide behind objects(not sure this will work though but just a suggestion), but apart from the basic logic, random npcs should be able to enter parked vehicles and drive away, or park a vehicle and leave, should be able to enter and leave stores, more random interaction with each other in a crowd and with vendors, rather than having fixed npcs interact with each other. Traffic needs bikers, gang members on bikes, shoot outs and drive by etc (depending on particular sectors of night city, watson can be high crime while city center can be low crime). Option to have high traffic (as of current) or low traffic spawn.
7.
Police
The wanted system imo is ridiculous. I was at this factory and i shot down some netwatch guys, instantly my star level goes up, i think the highest is 4 stars or 5. I had a whole bunch of MaxTac shooting at me suddenly, all i had to do to completely reset the star level was jump over a wall and wait for 2 mins. Similar scenario again only this time i took off on my bike. When the story mode has drones chasing you and some actual car chase scenes (police or enemies), why does the actual gameplay not have the same. Also MaxTac is barely involved in anything until player goes loco or is a scripted mission/side quest storyline. At wanted level 4, I expect MaxTac to chase me to death and burn my soul.
A lot more can be added, everyone can get a lot creative, but judging by the fact that Cyberpunk 2077 was supposed to be a game changer, and some other games have most of what I listed as basic features. Cyberpunk can definitely not just implement but improvise on them.