i have been saying this for years now , i said most if not all the dlc is on the disc already and ppl always said so why am i getting a 15gig dl if its on the disc already ?. well take the TTK bungle shuffled everything about and added quest lines to try and put some order into things also the "new" areas had to be populated and all the commands (doors opening enemy spawns , bosses and there movements/attacks etc , new guns and mechanics for them etc) all had to be added plus cut scenes/travel scenes and so on. the cryptarch has been saying from day one 3 word burst 12 letters that dont make sense "oryx dead king" when i heard this and then we got TTK i kinda thought that theres stuff left over from when they chopped the game up that they missed or left in as the npc's would be all but mute. then i read an article that detailed a lot of stuff like ppl leaving bungle by the droves (even now they are advertising for a manager for the dlc for destiny 2 , and note that a lot of ppl that made halo have now left bungle) in the article they said that rasputin had his own guardian that was kidnapped by the hive and one story line was (this was chopped from the original game btw) that we had to go and rescue him from the DREADNAUGHT thats why the place is full of hive.