The physics engine is worse, I thought it was perfectly realistic in IV.
If you stay in an area for too long standing still it goes empty and noone comes through. I'm currently standing in downtown and there's one car driving past every 30 seconds.
Can't buy from food stores, hot dog stands etc.
Weapon customization isn't as extensive as i'd thought. I was hoping for multiple silencers etc. (the better the silencer, the less damage reduction).
I seem to be seeing the same 5-10 cars in each big part of the map.
Lack of enterable buildings.
Can't wheelie any motorcyles or push bikes.
Shooting while driving is a nightmare. It is damn near impossible to hit something with a single shot even if they are stationary. You have to just unload your weapon and hone in on the target. Sucks
The police are OP, and you die from like one shot.
From the previews, the game seemed simply amazing and full of features. Now it looks like Rockstar made an empty shell of a game with DLC that they will sell for the features that we should've had at launch.