IMHO, for a consumer device, shipping with a rudimentary "ICE"* will be FAR more sensible than instructing the end user to run a clean room or purchase additional antistatic units (although it would not hurt if the scanner case would be designed with the thought that some users would like to mount something like Kinetronics anti static brushes in front of the film intake).
* IR detection for making a mask and implementing some sort of "inpaint" method - pretty sure that even OpenCV's inpaint would do fairly ok for dust and small scratches.
* IR detection for making a mask and implementing some sort of "inpaint" method - pretty sure that even OpenCV's inpaint would do fairly ok for dust and small scratches.