Where? What would trigger them? Getting a Grimoire card? Would they be cutscenes attached to missions? Cutscenes showing backstory wouldn't fit organically with flying down to do to a mission and would introduce even more breaks into the action. I just don't how they could realistically integrate that stuff into the game without interrupting the flow or boring the audience with endless voice-over. Maybe as video recordings from lost Ghosts? But that still begs the question of how you access them and when. The game does need more story, but I'm more interested in events that are actively happening being fleshed out through gameplay events. The stuff in the Grimoire cards is all history, and so it makes sense to have access to it in the game as text. It's just unfortunate that what does happen doesn't seem to matter much while you play the game, for lack of detail given while playing and in the few cutscenes the game does have.