I dont know how, but you Bioware and Electronic Arts managed to drive a game so straight forward up the wall. Blizzard needed 3-4 years to shoot their game and they didnt have a legendary movie series in their back.
If this is everything you, EA and Bioware, are able to setup with that pre work and background done by Lucasarts already, I would suggest you stick to your sport games and forget MMO's.
You are not prepared!