How about that core exploit that happened recently where players got 1000s of cores in a couple hours? I just saw a guys post with a link to a YouTube video. All their gear and weapons are now fully masterworked - i.e. all their armor in crucible is now fully masterworked which means they can use any set up and get the extra super damage resistance buff on any gear set they play. I have one set of crucible gear on my hunter masterworked and nowhere near enough cores to do the same for my Titan and warlock, let alone all the armor in my inventory...