I never got that criticism. Every xpac is about finding some animal inspired guys on some piece of land. Unless you really prefer goats or cows or walrusses or spiders or monkeys or fish or... over pandas (or maybe you just hate really big islands?) this really doesnt seem like a valid complaint about MoP to me.
And in a way arent raids and dungeons just glorified invasion points? I mean you do go through a portal and then you fight some mobs.