I dislike quitters, it's bad form to leave a match just because it's not your favourite map or because your team didn't take an immediate lead. The report function is great when it's needed. I use it all the time, when a player is highly skilled, I send a report for it. When a sore loser begins trolling around the battlefield bagging every ghost in site, he will get an unhelpful from me next time I have a chance. However there is an option for reporting players for quitting, though once they leave the match they are gone, not in your roster anymore and don't appear at the end screen for points/rewards. Without memorizing the names of everyone in game, how are we meant to let bungie know that "xplayer" is someone I don't want to be matched with again?