I can say in some conditions it is needed more space than rest of them. When you have 3 different classes so you need to keep exotic Armors of each class but if you have only 1 character or 3 characters of same class then you need less space because it’s only for 1 class. Of course this could be fix easy such as once you acquire an exotic Armors make it reclaimable with the saved gear power level and its rolls but that won’t happen. Or give us a separate vault for only exotic armors. And exotic weapons when you upgrade with a higher power level weapon make it reclaimable with that same power level that will remove the part where you need to keep recent power level exotic weapons but again that won’t happen. Other than that Hordes are at fault for not cleaning and keeping multiple copies. And to some who are new need to be properly explained how to keep that clean them self, often i see when someone helping in this issue they keep doing it for the other person over and over again instead of teaching them to do it them self.