I don't have much time to type, so I'm going to make this short. People keep discussing how the fallen would have made great allies, and how bungie should make a prequel to destiny to explain some more lore. Well I just recently saw Terminator: Genysis and it gave me this idea. The travelers light is going to be diminished forever by the darkness and there is only one thing that we can do to stop it, to go back in time and change the past. We have to go back and stop the fallen from becoming our enemies and form an alliance to fight back at the darkness and stop it from destroying the traveler. In the present we have to infiltrate the vex and steal their time technology [spoiler]im not a lore expert so if anyone wants to expand on this idea feel free[/spoiler]