Let me explain,
My main idea is that when a player kills another player a small reward is added, but if he kills a player of more importance than his reward increases, or if he steals from stores and is seen or something, a reward is added. .
They could also put next to the market tab a page of the people with a reward for their head, and be able to buy a GPS style to know where they are, but not their exact location, if not, their region