Bought warlords today and used the boost on my...86 Pali >_> Probably a waste of a boost, but I did it mostly for the professions (I'm always broke and usually only have like 10k between all my characters) and to skip pandaria because I wanted to try some Pali healing before I get bored again.
Also, of all the classes I don't have at 90, I still don't see myself playing a warrior or rogue, hunter I want to one day start a new one because I haven't played hunter since they lost mana and I think its quite different these days since the last time I played mine (during trial of crusader in lich king), the only other I considered was my Druid, but like I said, I wanted to try some Pali healing right now, And I'm most likely playing my Mage in Warlords anyway.
So, first of all, the 90 boost. Getting epic flying and pandaria flying was a huge (and nice) surprise, especially since I'm always broke like I said. I was scared for a second when all my items were gone (I had like 2 full sets of timeless plate in my bags) but then I saw the mail icon and figured that's where my items were. It's nice that they give you a full set of gear for the spec you choose, it's actually high level enough to go straight into ToT. Not getting the recipes for the professions sucks tho.
On the Pali himself, I actually like the healing, it reminds me of vanilla Priest healing before they mutated priests into what they are today. I have no idea which talents are ideal, I'm using the big heal+hot that costs holy power (which I rarely used in the ToT I did because I was always using the aoe heal with the holy power), and I got the healing sphere thing from the last tier because I'm not a big fan of 1min cooldowns.
The only thing I don't like about Pali healing (or Pali in general) is it has too many cooldowns, and I hate healing cooldowns, I'm always trying to save them for the "oh shit" moment and end up not using them most if the time.
Edit: also any suggestions for glyphs? Holy glyphs seem completely useless :/