Well, that can't possibly work on 360, but SixAxis may finally have some use. Shooting arrows with Kai in Heavenly Sword, was awesome, IMO. This improves that idea.
And I doubt this'll ever get fixed, just factor it in to the cost of the system. I'm willing to bet they'll start bundling them soon, the price is unlikely to drop, but sticking more junk in the box? Sony loves that idea...