Here is what I think should be the story of the next add-on. I'm not going to sue anyone if they use this. Rasputin IS Oryx. In the process of trying to fight off The Darkness, the human souls he used to do it succeeded in driving it back for a time, but in the process were corrupted by it and turned into The Hive. Rasputin, however, is still controlling them, and created Crota to lead them. The reason there are more hive on the moon than earth is that Rasputin saw that he could only defend one planet. Naturally, he chose earth, so he tried to use souls from other planets so he wouldn't have to use any there, because even he couldn't predict what would happen with the Hive. However, the Darkness had already conquered so much that the humans on all the other planets weren't enough, so he had to use most of earth's, too. The numbers of humans anywhere but earth and the moon were so negligible that the Hive soldiers they resulted in were quickly splonked by Fallen, Vex, and Cabal. Stuff happened involving people doing things (which, come to think of it, is also an explanation for the entire history of the universe, but that's beside the point), and eventually he ended up with the technology that the Hive use currently and gave it to them. The Hive use the whole "undead" motif because the Darkness killed them and corrupted their corpses but Rasputin somehow brought them back. Rasputin thinks that during the Collapse, the Traveler enslaved the remnants of humanity somehow (as revenge for using so much of it's energy and/or Rasputin hacking into it to repel The Darkness with human souls?), herded them into the City, and turned them into Guardians so that it could protect itself. So, he wants to break into the City and chop the Traveler into little tiny bullion cubes to free humanity from it. The thing underneath the Cosmodrome that he's trying to protect (which he must REALLY wish he could move to the moon) is the weapon that eats human souls and Light that he used during the Collapse. This would explain why the World's Grave had such an advanced database at it's core that Ghost says that it breaks the "Bekenstein Limit", which is probably a limit for how much data can be stored maximum per unit of the database's mass. I know if you read this far you're probably thinking that it would take someone impossibly derpy not to think of that, but seeing as how people say Destiny has no story, I'm assuming a few people that believe that are smart enough to read this far, but probably not. Now onto what I think should be in the next expansion if Bungie decides to incorporate my theory into their storyline (because the chance that they came up with exactly this is infinitesimally slim)... The Vex on Venus capture some exchange student or something from the Fallen House of Devils while fighting the House of Winter and interrogate him/her/it/mango. They find out that the Fallen know that there is some sort of weapon of Large-Scale Destruction (LSD) under the Cosmodrome, so they start building some sort of gigantic industrial-grade teleporter (or warp gate) on Venus to get to earth. Everyone starts panicking to the point of hilarity. Shortly after Ghost is informed and agrees to get back to the city as soon as he and the player finish whatever stuff they're doing. The previously mentioned "stuff they're doing" involves them running around on earth for a bit looking for tech and ends in Ghost being able to contact Rasputin. They tell each other what's going on, and then Ghost patches him through to the leaders of the City for negotiations. Rasputin refuses to believe that the Traveler has not mind-controlled humanity, but does agree to a temporary truce should the Vex make it to earth in order to dispose of the robots more efficiently. Then comes the best part. The player and co. go to Venus to attempt to stop the Vex device. They succeed, but it turns out the Vex had a plan B. The Vex all pile into spaceships, and the fireteam must engage them in ship-to-ship combat in space. This would introduce a whole new element to jumpships, which is needed because why should the first run-down piece of junk called a ship be just as good as a legendary ship? The fireteam cannot hold out, so they must retreat back to earth where all the Hive and about three NPC Guardians. Rasputin is mildly irked that the City could only spare such a small force, but after a short conversation the truce still holds. Then comes a gigantic battle between the Vex and the combined forces of you and the Hive. When the fireteam loses the first chokepoint, they must retreat to the door of Rasputin's bunker, which is the second chokepoint. The remaining chokepoints are all inside the bunker, each one with fresh Hive reinforcements. I have no idea how the chokepoint system would work, but let's just say that part of the mission must be restarted if all checkpoints are lost. After the main horde of Vex has been fended off, the fireteam has to retreat to the last chokepoint anyway for the boss battle with some big Vex thing. The benefit from having a lot of chokepoints held at the end is that all the remaining Hive reinforcements come to help you fight it. You succeed, blahblahblah celebration, and if completed at the hardest difficulty Rasputin gives you some sort of OP tool as a reward that you can use instead of your super that causes massive amounts of damage to the nearest six enemies, no matter how far away the nearest six enemies are. ---Actually A Frog P.S. If you read this theory, please reply. I am honestly not sure if anyone has read it or what they think of it.