Almost all MMO's borrow thing's from each other, Its fact, but what would you like to see WoW borrow next?. personally for me i would love to see Group questing like instant adventures from RIFT, i think it would be really neat to see raid groups of people working together in the open world. Also wouldn't mind some WvWvW from GW2, I also think some of the story questing from SW:TOR was quite good, What would you like to see borrowed?.