Thieves.
A pain in the arse, ain't them?
But me, meselves, was once a charming thief. It really helped me out, dawg. When my friggin' awesome speech skill was obscurely made something different from bartering and I was still too shy to solve all my problems with a gun, I stole. It is a bad thing, in general, stealing. So I stole mostly from the people that I knew were shit. Those damn Duntons and that evil, cynical Tubby. When I was too hungy I stole from those lovely blokes from Vault City, I repaid the favor by taking the green glow from their tea. Stealing used to be very useful and not so terribly complicated to do. I did save my game a lot, but in real life it's not so hard to steal from anyone.
So now thieves are a dying class with no benefits besides some nifty skill rate which don't work most of the time and they're cast away. There should be more places and opportunities to steal, set aside the market. Public spaces are good for non-amateurish pickpockets. But in the comfort of the slums of Reno, who's gonna care? There should be more areas without any surveillance, where the crowds might help you escape. The skill's effectivity rate should be increased and people should fear unguarded parts of the town not because of an absurd PK sniping in the middle of a crowd, but because of all those other "friendly" players passing by, real close.