[{quoted}](name=Slumber Jack,realm=NA,application-id=3ErqAdtq,discussion-id=kP8aybX9,comment-id=000c000a0000,timestamp=2015-09-02T23:02:28.708+0000)
Happening a lot would be a possibility. After just having someone leave their game, could that further hurt a player's general perception of the community when many of these players who deny mercy might otherwise be perfectly well-behaved and fun to play with?
To be honest, nothing gives a worse representation of the community than someone crying in pregame that they didn't get the role they wanted so they quit or feed on purpose, then everyone on that person's team gets a loss for no fault of their own. It's really unfair and the fact everyone then has to play a 4v5 for a minimum of 20 minutes, or risk an auto-ban for the AFK Detector, it just all adds up to a crappy experience.
If something like this happens, and yet the enemy doesn't grant mercy, I won't hold it against the other team, I'll hold it against the moron who left and cost me a loss/LP because the leaver is the reason that we were in that situation. I've been in games where it happened to the other team - they all played their best, no one cried in allchat, but they just had a dick in pregame leave because of something stupid, and if mercy was allowed, I'd definitely grant it to these teams.
Even if the mercy system isn't implemented, something needs to be done so one person can't completely ruin everyone's time and 4 people's LP because someone peed in their Cheerios that morning.