This thought just struck me: with the caverns of time, Blizz pretty much can do whatever they want with expansions related to them. For example, i think it is likely we will see an expansion where you spend pretty much the entire time on Kalimdor BEFORE the sundering.
I imagine Nozdormu would play a big part, as well as the rest of the bronze dragonflight.
It doesn't even have to be War of the Ancients, maybe something earlier, maybe not. It might even have several zones in different times. Tell me what you think of this idea
EDIT: I do know that there are a lot of expansion idea threads out there, but i just thought this one was something new, and possible. Just wanted to share.