I am a hardcore Destiny fan, and nothing keeps me more interested than lore (especially when it's Dark Souls-esque. But what most MMOs (which Destiny isn't, but fairly similar in a lot of aspects) have are character-specific missions to delve deeper into said character's personality and background. We do have some of this, the main one being Eris Morn as we learn more about her in basically every mission. However, there's not much more beyond that. Cayde-6 has the most fun personality, but other than Hunter class quests and a bit from TTK, we don't know shit about him. Grimoire cards are the best source of info on this sort of thing, but it doesn't compare to actual audio dialogue and gameplay. I want something fun, aside from shooting up aliens. A mission where a Tower citizen brings their child for a walk in the Tower, and wants the ball but can't reach it, and inconveniently is at the lowest part of the Tower so you have to kick it all the way down there for them. Those sort of fun little quests are what I believe Destiny needs. Especially big character-driven quests (the one I mentioned was merely an example of a fun quest that had nothing to do with shooting things).