At first I was like pandas are totally stupid and childish but I gave it a try. I actually enjoyed doing tons of dailies, well except stuff like the anglers, I never got past neutral with those guys. I didn't really like the raids nor any of the architecture, the dungeons were way too easy and the architecture used in those didn't sit well with me either. I did enjoy the remade classic dungeons for a while though. What was fun however, was completing the challenge mode dungeons with a group of friends. The sets are gorgeous and I'm glad that I was able to get my hands on them very early. Unfortunately Pandaren still seemed obnoxious, childish and like a giant comic relief to me. Patch 5.1 was awesome and I really loved the way they told us the story, I had something to look forward each day. Then came patch 5.2 and I liked it quite a lot actually, the architecture, while still influenced by asian stuff, was a lot better and fit in with Warcraft a lot better imo. I loved the green fire quest and the Isle of Thunder. I didn't raid much, but ToT is definitely my favorite raid of MoP. Patch 5.3 was a joke, there weren't even any daily quests, all we had was one stupid weekly quest and the whole rebellion and preparation for the siege was one big grind. Definitely the worst patch of all mop patches. I can't say much about 5.4 except that I don't like it, raiding Orgrimmar doesn't feel 'real'.
tldr: I still depise pandaren and I hope to never see them again, challenge modes were cool, I liked the way of storytelling in 5.1, 5.2 had a cool atmosphere, 5.3 was fail, 5.4 seems like crap to me
I'm unsubbed since December and will likely resub once WoD hits the shelves.