It would be extremely useful to be able to have a list of all the project components in a WorkSet easily accessible from the explorer, regardless of what dgn you are in. Exactly like the sheet index tool but for terrain models, alignments, corridors, (other things like coordinate systems, surveys, cadastrals as plain dgn references optional) etc.
You can maybe be selective about which of these to add to the list of project components (select alignment element -> add to WorkSet Components).
Then from any dgn, you can select a component, right click, and attach as a reference to the current model/ dgn. No having to search for dgns.
This would be so useful for handing over a project should someone resign or if you have new people joining the project.