Something I've always wanted in destiny and something that could be possible with all of the events coming in the Taken King is a PvP and mission Faction Games. The tower could be decorated, and similar to the SRL we would have new maps that could be based in the tower that look different depending on the factions playing in that game. You'd start by choosing your faction for the length of the event, then rank through crucible game modes where you play with other members of your faction. (Ex: Elimination, Dead Orbit V.S New Monarchy) Then say after every rank you unlock a faction specific mission that rewards end game loot as you progress. This loot would be different and unique from the loot sold in the tower. Just an idea I had, I think this could be a lot of fun, and I personally really enjoy the faction lore and would love to see it play out in game.