Okay, so we have chat restriction and bans, which only apply to people who speak. But what about people who destroy the game by feeding or refusing to help their allies? We need a punishment for these players as well to be fair.
I suggest, when a person is guilty of feeding too many games, they are forced to replay the tutorial, and then forced to play X number of games in coop vs ai before they can return to pvp.
This would actually decrease the amount of raging that happens in the game because if people knew those game destroyers would get their fair punishment, they would be less likely to verbally harass them.