It all still boils down to one simple fact; If I had wanted a new game, I would have gone out and bought a new game.
Tweaking, adding new content, or improving is one thing. This has changed it so much that it doesn't feel like the game I liked. I've been through the other patches and have not liked things before, never really complained, and never quit over it. This one is different.
I keep also reading, just play the game for the next month, it'll give you time to get used to it, and then see how MoP plays. One I don't like it now, and won't be playing it. Two why the hell would I buy MoP when I'm so unhappy with the patch? And three why should I have to get used to it? I liked and enjoyed it before.
Flame away, i don't care just as much as you don't care that I don't like it. You have the right to like it, and I have the right to voice my dislike of it.