In my view the feel of the city wouldn't change. The way cars move, the way people interact, etc would stay the same. Indoors, everyone that you see would still move and feel the same. But yeah enemies would have to be modified, but I don't feel they would need to be completely overhauled. At least not as I understand it with my limited knowledge of game development. I also think the most important part is the spirit of the game. And I think that all can be maintained. Games have been in 3rd person for generations and we know CDPR can tell a great story in 3rd person. So I think the game would be just as good if not better with the correct modifications.
Think about how flat and basic the architecture is in a game like GTA.
You can’t have the same level of detail in a 3rd person game because you have to mange the camera.
Interiors have to be basic squares and corridors so the camera doesn’t get stuck.
The level of details within the environments would be much less cause you can’t even really see all that stuff from a 3rd person perspective.
Look how differently these two scenes play out.
Cyberpunk is the much more detailed and immersive experience. Even tho you can go 1st person in gta. The level of detail and immersion just isn’t there because the game wasn’t built that way.
VS
Look how much less detailed the interactions and indoor environments are in GTA.
There’s benefits to either perspective. I wouldn’t say GTA should be 1st person and i wouldn’t say Cyberpunk should be 3rd.
I think it’s great they both play to their own strengths and perspective.