I can bet what happened.
The writers of the original Destiny (before it got hackneyed), presented it as a piece of video game literature to the suits. The developers' idea was that once you make something and put it out into the world, all we have to do is keep writing for it and making money. The writing team is a small price to pay for the bucks that we're soon gonna be rolling in.
The suits then decided that it wasn't video game literature, and could, and did, cut it up any way that they saw fit. The suits, all that they see is short term. So, they decided to cut it up and fuck the little guy out of his story. Fuck the writing team, because they have given us enough here to work with for the next six years.