Well MoP outsold Burning Crusade and held on to the subscriber user base better than WoD did, if that's worth anything.
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Okay...
Humans:
Blood Mage (Mage/Warlock)
Mountain King (Warrior)
Paladin (Paladin)
Archmage (Mage)
Orcs:
Blademaster (Warrior/Mage/Rogue)
Tauren Chieftain (Warrior/Shaman)
Farseer (Shaman)
Shadow Hunter (Shaman)
Undead:
Dreadlord (Death Knight/Warlock)
Death Knight (Death Knight)
Lich (Death Knight/Mage)
Crypt Lord (formerly Death Knight/Druid)
Night Elves:
Demon Hunter (Demon Hunter formerly Warlock/Priest)
Warden (Rogue/Mage)
Priestess of the Moon (Hunter/Druid)
Keeper of the Grove (Druid)
Neutral:
Pandaren Brewmaster (Monk)
Goblin Tinker
Goblin Alchemist
Firelord (Warlock/Also used for basis of Ragnaros)
Beastmaster (Hunter)
Dark Ranger (Hunter/Priest/Warlock)
Naga Sea Witch (Shaman/Hunter/Mage)
Pitlord (Warlock)
http://classic.battle.net/war3/
Hope that helps.