As much as I enjoy the lore, characters, and backstory of WoW, I acknowledge that much of it is very derivative or straight copy from earlier fantasy worlds, Lord of the Rings, Dungeons and Dragons, ancient mythologies, whathaveyou. What would you consider to be the most original idea (Lorewise) in WoW?
Personally, I'd go with moonkins. Unless I'm wrong, I've never heard of an owlbeast before a moonkin and WoW.