The police presence needs to be toned WAY down. Obviously if you start shooting people down in the street in the middle of the day, the cops will come and chase you, shoot you etc. But if you fire a gun in a dark alley, or shoot a homeless man on an abandoned beach, the police shouldn't show up, atleast not for a long time. Also, the helicopters shouldn't be able to shoot at you until AT LEAST 6 stars. The chopper should be there to keep track of where you are so cops can come on foot or in cars, it shouldn't be able to attack you. There's times in GTA IV where it would be SO fun to just sit on a roof and snipe cops, but then the chopper comes and ruins the fun because I have to constantly take out the gunmen until they eventually kill me. The gangs on the street need to be the REAL enemy, not the police.