I think adding Nerubians would be really cool, because it's always fun to have weird characters (though they'd be tough because they don't fit in most of the same armor and stuff...). Ogres would be silly, and though I could care less about Blood Elves, they are likely to be added later. I think the most likely additions are Blood Elves and Naga, with the Blood Elves added to Alliance and Naga added to Horde. If I thought about it a few more minutes, I could even tell you the classes that would be available to them, but I don't want to think about it that hard... :lol:
As for classes, I'm a little stumped. Blizzard seems to have well-covered most of the possible classes. The only one that immediately jumped out at me was Necromancer, but it could be too close to Warlock to be worthwhile. I think a REALLY cool one would be Demolitions Team, or Tinkerer with a serious focus on engineering-related skills, though it seems that's been covered as well. They may start creating new stuff, but it's probably more likely that they'll use things that are already familiar (Necromancer or Warden, maybe...).
That's all I got...
