LTQs for high level players, boss events for low level players, LTBs for high IPH players, case events for everyone. I've never "camped" per se, but there's nothing wrong with going out and robbing low level laundromats for the high RP / low XP ratio while avoiding buildings like Meat Factories or whatever. I could never be a pure camper because it's too boring, but if I'm strong enough to hit people 50-100 levels above me, I don't see what the rush in leveling up is.