I think it would be kind of interesting to have a chaos class. Slightly similar to zealots, but instead of being opposed to good and evil (extremes) they could be opposed to any organization. Meaning they would hate leaders of every kind, and have a mission, internally, to kill the head of any faction therefore increasing their own power by decreasing all others. These people would have very few, if any, friends. It wouldn't necessarily be an assassin or stealth type class but one to get the job done and have as many people running around directionless as possible. Power, respect and leadership all gained through organizational means are unacceptable. Likewise, these people would never be able to join a cabal, not even one of their own, for that would defeat their whole purpose. I don't believe this ideology would cause them to be good or evil based on who they kill, because alignment doesn't govern who they target, it's the choices and afiliations that come with each person that design who one of these people would target next.
Since we're throwing ideas around.
I'm actually going to try this thought process with my character as a current playable class 