Man, that's poor isn't it?! Bungie need to fix this stuff, and quickly. I've played and beat Crota hard mode since it came out and I've seen the Crux drop ONE time. Really, really shockingly bad drop rate. Having the Crux and no Husk is just as bad, if not worse. Would love to get Necro before the 2.0 buff comes along, as it sounds like it's going to be a demon in PvP : )