We could have a layer like panel, showing all the objects, that can be used to create a hierarchy. Or numerous hierarchies.
Layers (as-is, no objects listed)
Custom Hierarchy 1 (perhaps a build hierarchy)
Custom Hierarchy 2 (perhaps a material hierarchy)
Custom Hierarchy 3 (BIM LOD rating)
Custom Hierarchy 4 (group objects by drafting options, hide object by hierarchy rather than layer)
Custom Hierarchy 5 (naming conventions, name parts based on the hierarchy)
Custom Hier…
The custom hierarchies can have nestable “folders” for grouping like objects, just like the layer panel. All of these are identical feature wise, only our imagination and modelling processes decide how the hierarchy is to be used.
Features would be similar to the layer panel; right-click assign object to hierarchy level, select objects, etc.
There could be no limit to the number of custom hierarchies we could build to manage large models
more easily.