i think there should be an auctionhouse or something to that effect,, where players can sell their unwanted rare items/epic items and so on, for coins to other players, as well as a trade function between players.
and possibly in the auctionhouse there should be a way to sell your PC's for coin or buy PC's sold buy other players for coin etc. :)
over-all great game, loving it so far :D can't wait to see what this game evolves into!