I'm not familiar with the 3d scanning tech, but my first thought when looking at the examples is that they do not look really detailed. What is the max "resolution" of the machine? Can it scan objects with a higher number of particles?
One interesting feature of the current setup is the ability to "zoom in" on details. With the microstepping mode of the stepper motors, one can take 2/4/8 times as dense measurements of an area if necessary. The limiting factor here is time. A single scan takes around 40 minutes with the current resolution (1800*300).
It could be increased by adding multiple distance measurement sensors in parallel per scan direction.
It could also be made more precise by adding a "sub-gear" that only turns within the frame of the step. But this would lengthen the scan process considerably.
To shorten that again, one could add the same scan head into the opposite direction.
At the moment the resolution is depending on the distance from the scanning device. Meaning the larger the distance, the more the angling distributes the points on a surface.
There are no real ways to mitigate that with a stationary device. Density can be improved though with rescans, using the noise to increase, although there the noise blurs the points along the line to the degree.