I don't think Motion Plus is going to be all that and all the Cheese.

[Mr Khan]

There is the opinion out there that we were lied to, deceived about the Wii's motion-sensing capabilities when we were just substituting waggle for a button press

 

To the holders of that opinion, motion plus is going to finally fulfill the promise of the Revolution.

 

Motion Plus will do better than the other Wii peripherals, simply because it's applicable for so many things. However, market penetration will obviously determine it's viability. If the peripheral doesn't sell for some reason, it will fail, and become a self-perpetuating failure (no sales so no applications so no sales)