Dungeon, Raid, Trail Statistics!
I think there should be statistics at the end of dungeons. These statistics will give the community more to talk about. I think adding statistics will also make players more competitive as well. For example maybe you can finally have official proof that you are the best damage per second player among your friends. The statistics should be able to show how well all classes performed. So that healers may see how well they healed. Tanks can see how well their damage mitigation work ect. One benefit of this would be that players could use these statistics to help them learn the best rotations to use. One problem that may occur is petty fighting or singling players out. An easy fix to prevent these hostile effects of bringing in statistics would be to make a setting option so your statistics will not be shown or recorded at all. That would make it optional for your stats to be posted preventing people from knowing how well you performed and keeping you out of unwanted drama or attention.