What if after you get killed, during the load out screen, it describes how you were killed in the same derogatory tone it uses to say "Game Over" "Revenge" and "Suicide". In a very derogatory tone it could say things like "Assassinated", "Beat Down", Splattered", "Sniped", "Lazered", "Rocketed" etc.
That way it doesn't interfere with gameplay but it also humiliates you just a little bit after your death to push you to play better. Just thinking out loud on a Tuesday.