Align 2D plot at surface
In order to be able to analyze the course of the layer more easily, it would be useful to align the upper or lower border of the surface to a constant height as in the example pictures:
Aligned to Surface 1
Aligned to Surface 2
As reference the current status:

Interesting - so just to understand, transform the model to fit to a reference surface? Seems very much related to balancing approaches. Not yet implemented, and probably difficult to generalise - but for (relatively) simple 2.5-D setting (as in your examples above), I think this could be (a) possible, and (b) maybe even relatively easy to implement. Possibilities:
- vertical projection (vertical thickness), should be straight-forward
- projection according to scalar field of reference surface (similar to developments of @javoha )
Yes, where the target surface is a horizontal plane. I also think that in 3D it will be much difficult, but in 2.5D it will be a nice feature.