I don't follow Bungie's logic either and think it's a completely unnecessary move. I have rerolled lots of weapons after HoW and I have traded a couple of thousand parts for dead orbit reputation. I still have close to 3000 parts left, but this is only because I have played more than 2500 hours (2 deleted hunters for those who like fact-checking) and in those hours I have accumulated and dismantled a lot of weapons. However, most people don't have as much time to play Destiny as me and they are running short on weapon parts for no reason at all. Since launchday, weapon parts have never been a rare commodity, so why the hell would you change this out of the blue? It's not like that I have an advantage over other because I have more weapon parts....