NEWS FLASH!
The majority of what WoW did was copied from it's MMO predecessors EQ and Asheron's Call. Just beacuse you did not play an MMO before WoW, does not mean WoW invented the genre. All Blizzard did was take all the good parts of other MMOs, dumb them down to the lowest level and spit them out.
Blizzard innovated nothing, they just took the next logical step of what was already done.