That will just make it worse and make lots of other reports coming in because people will kill the bounty target, and then the ones around which then makes that whole gang/group initiated on since on is red.
Imagine you're out doing your own thing, and another gang member is on the other side of the map, gets 150K worth of bounty, comes near you for help in case things go wrong. The people hunting for them shoot you because the other guy is now always red, and as we always say "Red is Dead."
I don't imagine this ever getting added nor is it really a good idea to implement. Not without heavy revision of how it will work.