Actually, here's a straight-up tip for you. If you're trying to beat World of Warcraft at its own game, nobody really cares. The users, and would-be users don't. The media doesn't. Your investors might care, but they're probably really the only ones.
In a sense, World of Warcraft has already been beaten in various ways. There are games with arguably better graphics, that are arguably more fun, and lower subscription fees.
You can argue that there are games that are better than WoW in every way, but that actually really doesn't matter either. Nobody much cares about that, because WoW has something that can't be copied or improved on.