<I assume this happens in D3 and we get a Mass Effect 3 scenario. The Darkness LEVELS the City and the Traveler shields itself, but it weakens every minute (but stays up long enough till D4 or whatever). Meanwhile we set out on Calus's Leviathan and go to his home system, avoiding attacks by the Tetrahedral Fleet along the way. We catch a break and kill the remaining Conspirators and Calus is put back in command, accepting us as part of the Empire and allowing the Psions to be free... also recruiting all of his armies to fight the Deep. Also we get to solidify our alliance with the Fallen, destroy the Hive once and for all by killing Xivu Arath, killing another Worm God or two (I'd say save Yul till the last battle), and fight another Vex overmind that launches the Warrior Vex we've heard a bit about in the BoS. What happens next is up to Bungie, for I cannot deduce whether the Vex would join with us to destroy their annihilator or they will help the Deep to survive. Our social space would be Efrideet's hippie camp but that's just what I think or would like.>