News flash: Blizzard may have developed World of Warcraft but the Blizzard that made WOW isn't the same Blizzard that made the Warcraft, Starcraft and Diablo series of games that we all know and love. Most of the people who were in charge of making those games (with the exception of Tigole) left the company before WOW even went into development.
News flash: They weren't the only people that made Blizzard what it is today. They weren't the only people working on the warcraft series, the diablo series, the starcraft game. You actually think they were the only talented people at Blizzard?
World of Warcraft still has the Blizzard spirit (keywords: light hearted, humorous, fun, intuitive, great art direction) even though some people left. You're just pissed off because they're having technical problems (and I would probably be a little pissed off too).
They're new in the MMORPG genre, so I'm sure it'll only get better from here when they get some more experience.
By the way, they're working on a way for people to transfer characters from a high pop server to a lower pop server...