The dilemma here is that if the wiimote-style controller is a separately available addon, then developers can't rely on its presence when they design a game and have to make it work without one.
But if you abandon the traditional "two analog sticks" stuff then you risk alienating the hardcore gamers...
Yep. I don't think I qualify as a hardcore gamer anymore, but my preferred gaming set up involves me leaning well back and relaxing in a recliner, not standing or waving my arms around. I'll never buy a console reliant on waggle.