it wouldnt just be RPG like, i mean no doubt many people will commit crimes, like killing people, driving erratically even and the cops sort it out.
I can never make a addon like this as I'm not a programmer
I dunno, it sounds pretty cool to me, and its most simplest level there doesnt have to be rankings etc, ppl can just join the server and start their role of what they wanna be, so if you feel like being chased by loadsa cops you can just join the server, ram a cop car or something and the cops will be all over you.
similarly if you want to be a cop and feel like givnig chases you can do that.
then you can leave th eserver, no worries about game rankings etc.