Well there are many things I love in Mists of Pandaria but I think my most favorite is the Pandaria itself. All of the zones are very interesting and I was really excited when I laid my first steps on the continent. Questing has been fun and exploring new places have been interesting. I also love the world raid bosses in Pandaria, the Sha of Anger and so on. Looking forward to patch 5.1 and the new updates that is being brought to the game.
I like all of the new Rares: hunter pets, NPCs to fight and rare objects to loot. My level 85 Warlock especially loves that I was able to find Ancient Jinyu Staff.But then again there is Li Li...
Pandaria looks really good
I love the changed Alchemy (Harmony changing the Daily Transmute) and the Tillers farming for the basic resources: GENIUS!
My favorite part so far is the sunsong ranch and the new cooking. That reminded me a lot of harvest moon. And the veggies I sell in my AH everyday paid me the grand expedition yak.
My favourite part of MoP so far is the many new achivments and the very balanced raid instances..
Environment & Landscapes
Mounts and Music! :D
i like the fact that you can loot epic gear off of rare spawns...
The best thing about MoP is that there is always something to do, even if you are bored with rinse and repeat dailies you can do battle pets, hunt champions, hunt for lost treasure, etc.. Unlike Cata where it seemed like it was rinse and repeat dailies or farm.
The music alone is amazing this time around. Makes me feel like I'm in an old martial arts movie.
I got my CE MoP, rushed home, explored the box of goodies, and took a deep breath. Did I level up my main? Did I create a Monk? NO! I played Pet Battles for three solid hours! Love it. love it. Love it! Keep it up. SHtbiA! (So Happy to be in Azeroth!)
My favorite part of MoP would be the new battlegrounds. Its nice to have something that has completely different objectives than the past BGs.
I'm liking how the raiding has a lot of new mechanics!
New changes are fun, is not 100% a copy -> paste of an old expansion.
The pets. I had so much fun collecting and pet battling. I honestly thought when Blizz announced the pet system that it was going to be a joke, but when I actually gave it a chance I was hooked into collecting every single pet that I could. I haven't found too many people who disagree, either.
Pet battles, without a doubt.
I absolutely love the rare hunting, so far i've acquired alot of the special rare items like the hardened shell and whicky's whistle. they should have added these items long be4 MoP!
So far my favorite part has been the environment - the most picturesque zones yet. Also pet battles are good fun.