I think the next expansion after the taken king should have a portion that deals with the fact that we've all slaughtered Skolas. Bungie could set it up like a monthly event. Pick a week every month and say "at some point during this week there will be an invasion of the tower" and then when you're online playing patrol missions a notice would pop up and it could say something like "the fallen are invading the tower. Will you join the defense?" And then you could choose to join in that defense of the tower against a gigantic fallen incursion. And it could be led by Skolas' big brother Jhorlos and his pet servitor Kaliks 13. There would be huge fallen ships attacking with cannons and dregs and variations and vandals landing everywhere and just destroying everything. You would be able to fight on one of the huge turrets that are mounted on the tower, or take out your ship that would be outfitted with weapons to attack the fallen. Or you could join the speaker and his ultimate scorch cannon in defending the tower proper on foot with whatever weapons you could grab. Then if you survive it and protect the tower adequately you would get some awesome reward; for example you could choose an exotic weapon or piece of armor or get a crap load of strange coins instead. We need another group activity. The raids are boring and something that had a large group of guardians (more than ten) and possibly included NPCs would be amazing