Only skimmed it, but these all seem like pretty solid ideas. One idea I did have, though: all current Special weapons (with the exception of Lord of Wolves, Queenbreakers' Bow, and Dreg's Promise) would be exclusive to Guardians (the three I mentioned would be uniquely universal), and Risen/Eliksni instead get a new line-up of three new weapon classes based on the Elder Cipher weapons. I dunno, I think that'd be pretty neat.