Some new books would be nice. There's a lot to refer about the time shifting and whatnot. But a new achievement? I don't think so.
Currently it's just a realm hopping all the way (not like I'm going to condemn that) and the original spawn time is not amusing either.
By the way, the Dalaran fountain is full again
I wait for a first post or comment saying directly "bring back MoP" in the context of pet content.
Unless there's already one, I'd like to see it.