an extended merging of servers by languages... a guild garnison... a tabard collection. maybe a new "hunter" class because it's been a while since the last change.
I would like to see a new system added to the garrison to allow you to attack other player's garrisons. Would be alot of fun to attack other garrisons and defend yours.
Having the ability to sort the mount tab would be nice (like the pet tab) by having it show ground only. (seeing as we wont be able to use the flying ones for about 3 to 4 months, /shudders at just the thought of trying to do archaeology without flying......)
Oh! and to have the ability to sort it by species as well (rather than just alphabetically like it is now)