possibly interfacing some sort of player driven economy or Rare Item Drops. Maybe something like dungeons in WOW. Be cool to have a cue for that kind of stuff that.

There already is a player driven economy on rare items and bot drops already. It's just not the hands-off auction house thing WoW has.

I know there's a few players who'll pay handsomely for things like Avalon Torpedo Launchers and Hive Queen Gatling Cannons.

A plug in for this is in the works but creating a reliable and trust worthy client to handle this type of transaction is a rather time consuming task.