Oh, the other person you might want to flesh out is the person/people the bounty hunter is taking aim at. The fact that a system determines that a person is no longer profitable to society might come as a shock to the person(s) so selected. I could see the hunted becoming the hunters. The other problem selling this as a "positive" idea will be the fact that recent sniper shootings have left definite and strong feelings of such activity in people. That can be used in a story, but you need to be aware of it going in.