Not to say Blizzard never added fun, interesting stuff. There is a new class (Death Knight) and flying mounts and, of course, 3 expansions.
Still... for each feature added, there is another which never saw the light of the day. For a subscription game, I find WoW content somehow bare, and when I checked the updates hoping for some new kickass feature which was not about fishing or holiday events what I got... pets. To make things worse, there is 50% chance of said pet being acquired only if you pay for it. Paying for a pet in a game you already pay for it and pay monthly to keep playing.
Payception.