Meeting the conditions of:
Experience-bar-ish progress system
Containing a storyline
Being possible to play together over teh intahwebz
Something in the lines of Diablo II or WoW (not being them ofcourse, we've played them a little too much recently so we're searching for a game to fill out the time till Cataclysm/Diablo III is out.
Any suggestions very much appreciated
btw we've tried most of those pay-2-play MMOs, Warhammer being the one closest to something which we find entertaining, while AoC, Aion etc. failed miserably.