And the troll comes to the trolls defense... A blue actually stated that they were designing armor sets around new abilities where possible, otherwise they would go with a raid boss or feature to design off of. For mages they used Timewarp, druids used Wild Mushroom and paladins were based around Guardian of Ancient Kings.
OT: I think it would be very cool to have a priest set with a wing animation to mimic Leap of Faith!