I completely disagree with your opinion, and believe the cops are not agressive, nor hard.
The cops aren't aggressive? Really? They begin shooting at one star, they ALWAYS use deadly force. Why is there a police baton in the game for the player, but the cops never use them?
The cops aren't hard, I actually like them. But getting a wanted level for standing next to a cop, and then they start shooting without even using a baton first, are little things like that irk me about them.
Well, they don't ALWAYS start shooting. You do have the chance of being busted. But it seems like they start shooting a lot more than they need to.
Cops spawning ahead of you is another thing, it would be okay if they were already there, but i'm literally watching them spawn on my mini map right in front of me. Same as helis.
You get into a shoot out with a gang, you're the only one the police come after, unless you use the wanted down cheat.
Same goes for when a pedestrian starts a fight, the only way to not get in trouble for fighting a pedestrian is to just keep dodging their attacks until the police arrive, and even then it sometimes seems like the pedestrian never gets in trouble. What happened to that in GTAIV? One of the main things I liked in GTAIV, was that you wouldn't get a wanted level for protecting yourself in a fist fight.
Also, how sometimes when you're out of the police line of sight, and you dip into an alley or behind/on top of a building, and sometimes they automatically know exactly where you're hiding. Like, really? They're in search mode, but the only place they really search is EXACTLY where you are hiding..
GTAV is an improvement in many ways, but there are some things that still do need to be fixed. Mainly just the Cop AI.