Still as bad as I remember. Just not enough raiding content.
Absolutely loved Firelands and the Molten Front area, my problems lies with a very short/rehashed Dragonsoul and a short Firelands.
Launch was fantastic despite feeling very disconnected going everywhere. The raiding content aside from being tuned awfully was plentiful, dungeons were difficult and the revamp was fun to level through.
For me however expansions have to have smooth sailing throughout, and Cataclysm was probably the worst example of smooth from launch to end.
TBC - Launch (awesome), end (awesome). Not going to include a middle because they threw everything at us at once and had massive gaps. Personally the wrong way to do it, but it was still good.
WoTLK - Launch (awful), middle (awesome), near end (awful), ending (pretty good).
Cataclysm - Launch (awesome), middle (good), ending (awful)
MoP - Launch (pretty good), middle (awesome), ending (pretty good)
I'm reluctant to even list the ending as pretty good for MoP because I think it's personally awesome. As a raid I like it more than ToT, but I liked the story progression and the Isle of Thunder far more. Timeless Isle will ultimately probably have a purpose in the grand scheme of things, but it is seemingly random.
Most of my criteria for what I consider good is based on dungeon/raid content. WoTLK zones, story and overall theme for launch were really nice. It had a lot of dungeons too. My problem and what made WoTLK one of the worst launches for me is that the difficulty and sense of accomplishment was non-existent. I got an instance that I personally did nearly the entirety of as rehashed watered down content, and basically had nothing challenging to do aside from arena for 6 months.
So while it may appear based on my above analysis that I think WoTLK is the worst, it really isn't. Cataclysm still holds number one for worst expansion for me. MoP/TBC are very close as far as best goes, and most of my love for TBC stems from a time when the majority of my friends were still playing and the content was still challenging (compared to say WoTLK launch).
I do tire of the Asian themes in MoP though. It was a really nice breath of fresh air for the first several months, but it's lasting appeal just isn't as fun as past expansions. Obviously it's still dark and deep story wise (which I love), I am more or less alluding to the continent itself.