Bubble has burst and people want something different. That being said, I purchased and am having fun playing my pandaren monk as a casual player but the majority of MMO players have moved onto GW2/real life and/or want something new.
It is still a good, quality expansion but is indeed more of the same. Nothing wrong with that if that's still your thing, but for many people, it just isn't enough anymore. Having come back to WoW from GW2, I immediately noticed the antiquated engine and game mechanics. Will still probably level to max, check out the new content, maybe raid once or twice then move onto something else
- Boppa