I'm enjoying the leveling and questing experience so far, though I haven't gotten that far (I'm only 72). However, the first two instances, Utgarde Keep and the Nexus, were way too easy. It looks like the instance and raid difficulty has been toned down way too much, so I really don't know if there's going to be much to look forward to once I hit 80. I'm far from the most hard-ore raider out there, but still I want something of a challenge...

I also tried the new BG. It was a lot of fun, but still the siege engine-centric play made it more like a minigame than real PvP, no? Honestly, I never really cared much for WoW PvP, and I was never good at it, but I could imagine the new BG will get old and repetitious quickly as the progression of the battle is pretty much static and isn't determined by the players themselves (such as which resource nodes the enemy goes for and how the enemy spreads themselves out in Arathi Basin, for example).

I think I might try leveling a DK at least through the starting zone, though as a Mage who has never even tried to level a non-caster class, I really have to get used to playing as melee.