This is very beautiful, and with Warlords of Draenor coming out I think it'd be cool to see you redo this piece. It is just my suggestion, but you could do one of those cool "Before/After" pics and redraw Nagrand in its updated form once Draenor is out. Of course you don't have to. I just think it'd be cool!
You captured its beauty so well! It's my favorite zone, too, even after all the other expansions. I still go there every once in a while just to look at it. One of the best WoW zones ever created by Blizzard.