Spring RTS Engine

[teh]GrumpyOldMan suggested an idea for balancing coops. We came to conclusion that team with some cooped players has advantage over same team without any coops. So here's our idea:
treat cooped players rank as max rank in coop + number of players in that coop. Or just increase each player rank in coop by number of cooped players. Or something similar.

Currently teams are balanced before looking at coop requests (i.e., it's not because two players used !coop with same coop group that they will end up in the same team => there is no way to know which players will coop before actually balancing).