A library in the Tower? I'm not entirely sure people would take the time to read the cards even if they were in game, so how about this: You've completed a Quest or whatever for a new Exotic, with its own Grimoire story. Does it drop as loot? No. Take it from its resting place, à la Thorn in Charlemagne's Vault back when the game was announced, and experience its story yourself, ODST-style (ODSTyle, if you will). Use it in the mission and then keep it afterwards. Keep the Bounty on your person like any other one, then play the Grimoire mission whenever you want. My mate tells me Nolandroid will be narrating Grimoire cards from now on, what with his new scanning and whatnot, but I'm wondering if I might find that hard to follow anyway, having to follow a story read aloud whilst doing a mission would distract me quite a bit I think. Would it take a while to implement with decent mission design? Sure. Would it have to be kept limited? Perhaps. But I still think it would be pretty awesome.