Nope. As an example, the top Ret Paladin rerolled and played his Shaman instead (Vanguards). Yes, it was THAT bad. The same could be said for a variety of other specs.
Class design doesn't refer to just aesthetics. It also refers to how the class works. Some were designed in a way that was blatantly over-powered, such as Arms Warriors at the start of the expansion, which consequently got nerfed into the ground.
Let's not forget about how broken Beast Mastery Hunters were in world pvp, though, yeah? Or Destruction Locks were with one- or two-shotting people with Chaos Bolt?
The developers don't agree with that point. The developer's agreement was on the point that it didn't fit into a game that was historically nitty and gritty. The fact that you seem to think people are justified in complaining about asian "styling" makes me wonder why they haven't complained about other cultural references in the game..... sorry, it's about the Pandas.
Overall, I would have to say it seems more like you've just read about the expansion on live. If you had actually played it while it was live, most of this stuff you wouldn't even be posting.
And again, congrats on derailing the thread. A thread that is titled "Warlords of Draenor" turning into a discussion about MoP.

