Ive been working some on autocad but abandoned the windows platform some years back.
Layer stacking order is not important to me. (being a watchmaker, not an arcitect) its more important to quickly find a layer and when my current project counts approximately 120 layers it can be hard.
I wanted to use the sub layers to store the 2D and the locus-cloud for a 3D part. (these are nice to have when doing annotation and exporting dxf etc.) I guess I should make up some classes for this but dont want to change in the middle of a project.