Do you have plans for an USB or FireWire remote?
The DigiSnap products are camera controllers. To control a camera via USB would require that the DigiSnap become a USB host device, which is hugely more difficult than the requirements for a USB slave device, like a mouse, or even a digital camera. To my knowledge there are very few if any hand-held USB host devices on the market. The cost of such a device would be significantly more than the existing DigiSnap, and the development process is way more difficult as well, suggesting that the selling cost would be extremely high.