I was aware that Destiny started as a story-heavy game that had a lot of cutscenes, but due to some trouble with the higher-ups not liking the way the story progression worked, with it having a plot-twist and the planets unlocking one-by-one as you progressed. So they quickly redid the story to have all the planets unlock earlier, and removed the cutscenes and patched it up with the Grimoire card lore. They then went on to release DLC for pretty basic additions and gameplay tweaks until The Taken King, which features a planned setting for the original game that was never implemented in the first place, and a more well presented story that is really just great by Destiny story standards.
The massive amount of money they needed to suck out of fans to fund Destiny 2 had better go into a game that actually goes through a normal development cycle. Because the restructure of Destiny 1 has created this thing that really could be so much better… The only belief I have in Activision is through Bungie, and just how I know they are good at making games people love to play.