As a whole was as WoW players are a pretty tough crowd to please. This is probably because of the diversity of the player base as well as the variable goals that we set for ourselves. We range from casual PvPers to hard core raiders. We all have our fair share of complaints, but judging by the games massive popularity, it seems Blizzard has done a decent job of responding to the competing demand of its subscribers.
Amgusrex of Moon Guard is concerned that play in Wrath of the Lich King will not be challenging enough. He feels that Blizzard does a disservice to players by nerfing the difficulty of content with progressive patching. His post is pretty inflammatory, calling others cry babies and pointing toward a "massive population that is bad at video games." Taking a look at the Original Poster's Armory profile, I have to assume that he is not posting on his main, because if he is he still has to over come many challenges himself before declaring the game "easy mode."