Yep me too ,, I had a grimoire of 3200 , which was ok ,,, had never bothered with ghosts at all til I got bored one day , spent a couple of hours ghost hunting now I have just over half the ghosts my grimoire went up 285 points but it's really only ghosts and a few crucible ones I need I would say any grimoire of over 3000 was decent up until the taken king comes out , I still find myself in games with folk who haven't even done a vault of glass , also a lot of times if u watch the scoreboard in crucible the high grimoire players usually have the best scores