3. Near-real NPCs
As great as the NPCs are in GTA 4, they're still not all that convincing as real humans. In the first GTA on the next consoles we want people to have lives and personalities, and to have their own goals in the game. GTA 4 is great at creating the illusion of realism, but look beyond the surface and you'll easily spot things that show you're still just playing a game. People should go to and from work, stop in the street to talk to friends, and hopefully drive far better than they do in GTA 4.