HI Ben,
thanks a lot, even it was just a tiny help, if at all.
To sculpting along images or drawings is certainly a work that should have all the support possible.
Would you mind to define your needs and ideas to MAXON, I guess an interface Feature that allows for an easy adjustment of the visibility (as in Editor View> Options> Default Light) as the interactive light adjustments, would be great.
I could see a XY field as helpful. Left to right mouse movement over it adjusts the transparency and up and down shows the object progressively with a checker-pattern (to see the topography in a better way).
You ideas might vary of course.
https://www.maxon.net/en-us/support/suggestions/
Thanks a lot.