I worry that I'm getting too excited for Warlords of Draenor. Letting my head run away from my heart, so to speak. I've done it before - pretty much before every expansion, I got super excited and imagined up a whole host of ideas for what the expansion was going to be like and all the cool things we were going to get to do and sometimes they came true and sometimes they didn't. Wrath of the Lich King ended up disappointing me greatly, because the Northrend I'd imagined wasn't even close to the Northrend we got (and to people who loved Wrath I probably sound like a crazy person) while Cataclysm ended up going so far beyond the revamp I expected that to this day I'm still very fond of it as a 1 to 60 experience. It started the transformation of the Horde/Alliance balance to one of much closer parity.
Mists has been an interesting experience in that regard, in that I simply didn't expect the Pandaria we got at all, but I'm fairly happy with that - the hozen, jinyu, mogu, grummies and saurok are all far more interesting to me and did a lot to make Pandaria far from a monolithic experience. And so, I sit here imagining all sorts of things for Warlords and wondering how much of any of it I'll get to see.