The idea itself is random module selection. Every player gets a random set of modules and weapons he can use, chosen completely randomly. Some modules and weapons can be secluded from the choosing.
I just imagine seeing l-tag+scout/hunter/surveillance against bow+heavy weapon pro/ordinance alert/detonation delay.
The emphasis is on making all people play the unpopular choices of modules and weapons, so they can be chosen not randomly, but by tournament organizers.