Future GTA game? I'm gonna actually say some nice things about this for once.

What I want in the next GTA game:

No cheat codes
A silent/nameless protagonist so the player feels more like he/she is playing as him/herself
AI that actually acesses the situation and adjusts accordingly (like if you're in a big gun battle the enemies will do stuff like hide behind walls, throw grenades, duck for cover when the enemy is firing back, start going around looking for whomever is shooting at them when they actually hear the gunshots)
More penilization on the player when he just goes around and doing stuff liking blowing up buildings and killing people
Eliminate offensive racial stereotypes
Make online playable content, like downloads that unlock new cars, cities, missions, etc. Multiplayer co-op missions
RPG-like content where the character's speed/strength/ability to take damage/etc
Heroic missions where the player is rewarded for doing something good, like rescue somebody, bust a badguy, or even take down a purse snatcher.

If they put that in GTA4 might not actually suck.