In a lengthy post, and one that should be stickied on the Battle.Net World of Warcraft forums, Ion "Watcher" Hazzikostas has written a most interesting post in response to players concerned about a vendor found in alpha selling items and mounts at very, very high prices. After informing the community that this vendor is not meant to be a 'gold sink' (that's adequately taken care of with repairs & auction house tarifs), Hazzikostas went on to explain a fundamental feature of the game, point being that not every player will be pleased with every design decision every time.
Second, almost every facet of WoW is an activity that caters to a minority of the playerbase. That may sound odd at first blush, but it's true. In a sense, that's part of the magic of WoW. It is not a narrow game, but rather one that can be enjoyed in numerous different ways, by people with hugely diverse playstyles. A minority of players raid. A minority of players participate in PvP. A tiny minority touch Mythic raiding. A tiny minority of players do rated PvP. A minority of players have several max-level alts. A minority of players do pet battles, roleplay, list things for sale on the auction house, do Challenge Mode dungeons, and the list goes on. Virtually the only activity that a clear majority of players participate in is questing and level-up dungeons, but even then there's a sizeable group that views those activities as a nuisance that they have to get through in order to reach their preferred endgame.
And yet, taken together, that collection of minority groups literally IS the World of Warcraft.
You can read the rest of the thread beyond Watcher's post by visiting the World of Warcraft community forums.