This is a fairly straight-forward topic, and certainly one that has been discussed a thousand times in various iterations.
But today, I'd like to find out what you guys absolutely crave for a future expansion to WoW. In other words, which particular theme makes you all warm and fuzzy inside, hoping that it'll one day be announced at Blizzcon?
Personally, I'd be all giddy over a water-based expansion with oceans, tropical islands, underwater caves, coral reefs, and so on. But how about you?