Hello.
What about an job system? Like, if you choose an stealer skin, you'll be a stealer. And then, we could get jobs like: Mechanic, Bus driver, Car stealer, drug seller, and, gangs, that can rob banks and stores.
Gangs:
Bikers
Vercettis
Haitians
Cubans
and some other =P
But, the rob store system would be great if there where bots at the stores.