If this was on PC and it had a mod community, like skyrim does on skyrim nexus, then all the grimoire would become real. Releasing a full game with little content on console you just have to deal with. Release that same game on Steam or something and you have a mod community just itching to expand more on these grimoire cards that we can read but most of the references are only just names or locations you'll never see. I'm only saying a PC mod community would turn Destiny into the game some people feel it should have been. And it would be done for free :)