You might not know it but destiny had some very interesting lore and back story written in the Grimoire cards and it should be a top priority to add that into the games somehow. While it would be acceptable to just have a kiosk somewhere where the cards will be readable but that's not enough. What should happen is that cutscenes from some of the major events should be made. The battle of twilight gap, shin Malphur vs Dregden Yor, Kabr sacrificing himself in the vault, the death of eris' fire team, all incredibly important events that a lot of the community may have no idea exists. The lore exists and it's time to show it Bungie.