Surrender should be changed to 10 minutes, since the snowball nature of the game.
Or even less, and let it be 4/3 votes on favor. A lot of the matches are a huge waste of time. Your team knows it, your opponents know it, you know it, but there is always that guy that wants to hold everyone hostage. Trying to comeback from a game he is making impossible to comeback. And since 3 means the majority of the team don't want to play with that team anymore, it should be over.