Im not In total disagreement with you but do you feel that someone who drops in at the end just to watch the final boss die should get anything? Yeah it would suck to sit in a few loading screens but it only really effects them for another minute of their life. And lets be honest, how often does the game actually drop people in at the last few hits of the boss. the matchmaking system for strikes still rarley refills my games when people leave despite the last patch that was supposed to fix the rate it dropped players in.