Clan league!

[Coolio]

Saw that you were thinking of using a middle man to decide matchups...
Another idea: instead of using a middle man, each clan would use their leader. The leader of team 1 would announce publicly who they want in the first game. Leader of team 2 would then announce who they want playing against that person. Leader of team 2 would then announce who they want to play in game 2 and leader of team 1 would say who tey want playing that person. This way both leaders are equal in they both go first and second in the game-making process.

I think this method would be a little more interesting because the leaders have a little more control of the matchups. Some games could still be more points then others too.