I think for all those people lile me that have grinded out the grimoire score to get it high up should be rewarded for something. Something like a weapon or a class item. There could also be weapons that you can unlock by completing the weapon specific grimoire cards such as pulse rifle or side arms. Many people may think that this is a terrible idea but, personally, i think that it is a excellent wat of getting people to get people trying to unlock these grimoire cards. It would make people think more about there grimoire.