Bland, hideous, boring, uninspired.
After two different versions of the Dark Portal, a vista of Icecrown and pretty epic imagery of Deathwing on Stormwind's rooftops, this is a rather paltry offering. I would have expected them to capitalise on the bright, vivid colours that the Chinese-inspired architecture and landscapes could display and make Pandaria seem a beautiful and mysterious place to discover. Instead it's a dull pallette and unremarkable statues of an unremarkable new enemy they're introducing. Even something highlighting the increasing tensions between the Alliance and Horde would have been better than this.
Says a lot about the direction of WoW; while I won't say that gameplay is slipping - obviously it's not, a lot of people still love to play - but for the story aspect, it's now picking through a mire of humdrum new enemies and storylines to find the few interesting scraps. The MoP login screen makes Pandaria look, to me, uninteresting and not worth renewing to play through. It doesn't sell me on the Mogu as a fearsome enemy to be reckoned with.
The new remix of the WoW theme music is pleasant, at least.