Similar to your idea, but different. A weekend crucible subtype called Faction Wars (creative i know). Pick a faction* and then queue up for faction wars. Instead of the normal 6v6 crucible. It could be 4v4v4. Larger maps could be 6v6v6 (i'm lookin at you huge and empty First Light). Bonuses include increased rep gains for faction of players choice, unique shaders/emblems (maybe even items) for winning, of course distributed by our savior RNGesus. *there needs to be a way to keep faction choices balanced. So when one faction starts to have too many people it could be a locked choice, or the less popular faction could get further bonuses to exp/rep/item drop %.