Yes, linear Layers or classes are a bit 90ies. I don't know how ACAD users can live with their Layers only, perhaps there is a filter option and they have their Layer states. Like VW Saved Views but I think you can hide unwanted Layers that way.   VW has its hierarchy but its limited to "-" separator and very unreadable.   I think even simple coloring would help Navi Palette.   What I see more and more in parametric BIM Apps (e.g. FreeCAD) is sim
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