Of course Blizz is happy with MoP. Not like they're going to come out and say this is horrible don't play it...
For me personally MoP was terrible, I didn't like the lore, I didn't like Panda's, this is just me. I hated that I could only get quests in Jade Forest at 85. I hated the fact that Panda's keep telling me to relax and enjoy life but go kill 55 of these toads for me cause I'm too busy enjoying life..Just really hated the feel of this expac, I wish I could return it but outside of that I unsubbed to show them my displeasure of this game. If next expac shows anything interesting I may come back but as it stands now..now way.