Auction Houses killed Diablo 2. Never forget. Also, that seems like a horrid idea. Everyone can now have an exotic, and with a cap of 25k glimmer and glimmer farming everywhere, you can buy multiple Exotics and make Xur practically useless, except for upgrades and shards. People have multiple Exotics, and with so many players, no Exotic is going to be rare. Also, raid armor without doing the raid.