I'm enjoying it as well, new areas and quests are always welcome... plus making boo-coo bucks buying and reselling gems to all the new jewelcrafters...
Heh, power gamers are LEET dammit! Second day of the expansion I saw a lvl 26 blood elf paly in Ogrimmar... hmmm, stayed up two days just to power level a toon? What a neeto guy!