The grimoire is considered lore, lore is supposed to be an extension of information from the games universe. It's not supposed to be your only score of information though. The lore needs to complement the story, and add to it, not be the entire thing. You cannot get mad at me for not reading through the hundreds of different cards just to understand why the hell I'm fighting for the traveler and why I should give a shit. Bungie, this is why you got a 6/10 on most reviews, it's because you didn't have a competent writer and director that could actually incorporate all the lore and facts into a comprehensive story. Instead they went with the old "Defend and Horde" mode bullshit we see throughout the [u]ENTIRE[/u] story. Your expansions better have an extremely large amount of story missions that don't even mention unlocking a damn door with your ghost.