I agree Hellfire wasn't revolutionizing from a graphics or color standpoint (Blades Edge used too much orange also). But Blizz should learn from their past and not say "that was all orange so this can be all white." Like I said, this is a fantasy game so they should go nuts. WoW lore and basis in reality have been all over the place for some time now. I like Pandaria but with such a blank slate for the area and lore, it could have pushed the boundaries a bit more.
And yes this has gotten waaaaay off topic
OT: I applaud MoP for it's efforts and content but nothing really makes me want to continue playing sadly. Maybe I've just grown out of it.