I have to say I find myself a little disappointed in that decision, but only from the perspective of my Alliance character. While Bladespire was pretty cool, it was nowhere near as jaw-dropping as Karabor. Shadowmoon Valley is utterly breathtaking and beautiful in every way, and I can't wait to plop down a garrison on live when the expansion is released, and will probably spend the majority of my time there. From the perspective of my Horde character, I'm hoping that Ashran isn't a snowy wasteland, because I'd like some gorgeous scenery to look at. Sure, some people might find snowscapes beautiful -- I'm not one of those people.
Obviously we now know exactly where our hubs are going to be. And so far, we've only seen a few of the zones Draenor has to offer. We still haven't gotten a really good look at Nagrand, or the Spires of Arak, or any of the other zones available to explore. But just for the sake of asking -- if you could have your faction hub anywhere on Draenor, where would you want it to be?