This is the worst forums I've ever seen for a game. Like are you guys seriously complaining about this game?
Umm, yeah. I consider myself a HUGE GTA and Rockstar fan, but I agree with the OP. The game doesn't feel finished and I felt it from the first 10 minutes I started to play it. Yes I have finished the story missions and all side missions. I truly believe the game was overhyped.
"Driving, shooting, car damage, AI, police, lack of accessible buildings"
as the OP has said these are all downgraded. How can anyone deny this? The gore and rag doll physics really suck compared to MP3/RDR, period. Rag doll in GTA4 was way better but gore was mediocre in that game as well. Shooting/gore/physics in MP3 DESTROY this game. Even RDR had better ragdoll/gore! Why couldn't they have used something along the lines of those engines? I just DON'T understand.
The driving is subjective, but its definitely "easier" and less complex than it could be with regards to physics. Drive by shooting plain sucks in this and feels horrible. The cop AI is meh and no real improvement at all. Car damage is toned down and not an improvement at all. Hardly any interiors are accessible. NPC AI has no big improvement. Its cool you can interact with them and they respond but its still not revolutionary. They just run like idiots when you point a gun at them, no more putting their hands up.
Is it a fun game? YES. That doesn't mean it doesn't have some serious negatives and downsides that disappoint people. With every game in the series I expect upgrades across the board, not a few steps forward, a few steps back, especially after 5+ years of development, $260+ million and when Rockstar has proven through previous games that they have the engines already made that would greatly improve the games gameplay.