I actually couldn't care less about the rewrites and what got cut. Literally every movie and show ever had extra scenes they had to cut. Or parts of the story that got rewritten. You know what's happening in destiny without reading up on it. You're woken up, ghost explains that humans collapsed and there was an invasion by evil forces, and now we gotta do what we can to prevent the darkness from winning. Halo was a game that told its story with cold hard facts. Destiny leaves a lot up for interpretation and speculation. It's not spoon fed to you. There's a ton of moral grey area everywhere you look. The books of sorrow themselves say that they were written by the hive and may not all be entirely true. Exactly like the bible.