I bet a lot more, considering a lot of people only play horde by their op racials...that's why i did when i first started playing this game mid WotLK and i didn't know much about the game then, except for that.
here's a better specific question for the point of this thread. What race would suit a warrior, druid, priest, shaman and mage?
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I'll be able to vouch for that once i start playing alli. Horde is miserable aside from the lore and op racials....stand in org all day, all night.