IMVHO Sony will better release bundles with 4 controllers, or the amounts devised as most appealing (both complete sets with camera and all the necessary and add-on kits with just the extra controllers), at very attractive prices. Or even licence the tech to 3rd parties. I'm wondering whether the implementation would allow to make a "navigator" with some motion control features like the nunchuck or it's too late or too complicated. It shouldn't be expensive, the issue is just the complication. Or maybe a version of the Move with an analog stick...