Wishlist.... well....
My only hope is that Mutagens are handles better this time around. It was ridiculous in TW2. I couldn't CHANGE assigned mutagens (which was at least partially acceptable and understandable), I had to assign them to specific (completely unrelated abilities on the skill tree and the greater ones spawned by a percentage of about 0.05% or so.
I just hope next time mutagens are separated from the skill tree, maybe we have mutagen slots we can unlock, or similar things.
And that the gaming world is really vibrant, living. That includes random weather changes, many interesting Witcher contracts and side quest, leaving breathing ecosystems and the empty spaces between the villages and POIs should be filled with normal animals, plants, fields, water and of course monsters in those areas. I want this world to feel alive.
And I want the fights to still be as challenging as in the Witcher 2, but hopefully this time we will have more actual SPACE to fight enemies. All the time in boss fights I was pressed into a very small space, while the lack of jumping and the space itself in the end caused me to run around in circles and back and forth in order to evade the attacks of the monster while trying to keep myself out of a corner, that was annoying. Also the monsters should follow you a little bit longer. In TW2 I often fought against and Endrega Queen or a similar monster and while running away from it and evading it, using the space I had, she would suddenly turn around and get back to where she spawned because I seemed to be out of the area of where she attacks you, that was a little bit lame. So I hope for still challenging but more balanced fights with every enemy I encounter.
Level Cap.
I hope there will be none.
Big Monsters should be so strong that you can just barely beat them if you are on level 2 - 5 in the beginning, and that only if you use every way there is and if you are really lucky.
Since the Monsters do not evolve with you it means they make the same damage and have the same amount of live, so I hope the Big boss monsters which you are supposed to encounter in every region at least 1 if not more of them are actually almost impossible to beat at the beginning and that you will not have a restriction in terms of level.
I would like it to be that if you just do missions and do a minumum of actual "leveling" that you can only reach a certain level, but that your level is not artificially restricted but that you can - with the right strategy - get a higher level earlier if you fight a lot against monsters. Of course the XP required has to rise and the monsters only always give the same amount of XP, so you can not kill the same monster over and over and expect to just rise in rank fast.
All in all, I hope it is relatively balanced, that you FEEL that you are getting stronger, but also that there are monsters that you can almost not beat in the beginning and therefore still pose a serious challenge later on if you are higher in terms of level, if you have more abilities.
I always liked that in The Witcher (at least in TW2 (forgot how that was in TW1) you did not gain anything by just leveling up, but the only thing you gained was that you could learn new abilities. This basically meant that your character was not getting stronger by rising in level alone, but only by the small boni and abilities you got when using the skill points. That always made sure that Geralt was actually completely the same throughout all of the game but gained 1 or 2 advantages and abilities by learning them in the skill tree, abilities you could use to get a tactical rather than a POWER advantage over an enemy. Every enemy could still kill you with a few strikes, some less later on, but mostly because of your abilities such as "+X vitality" and "Quen Level III - Damage Absorption now + Y%".
I loved that, I hope they can continue a similar system successfully and can (hopefully) eliminate any leveling restrictions though.