Not all objects are xrefs but finding those xrefs in the middle of every object is really handy for xref management functions.
Can Xrefed objects be filtered by your filter engine?
Can Xref objects that have been edited externally be filtered?
Can Xref objects that have been edited internally be filtered?
How to deal with objects that have been edited both internally and externally by some project management mistake?
Can those carry a warning, like file sync error software does, and also be filtered by the engine?
Can we somehow push all the changes made to external or internal components automatically or with a single click of a button?
And if so, how to deal with components with sync errors?
All those actions are really handy and especially the ability to somehow compare components that have those “sync” mistakes.
It would be interesting, in this case, to be able to edit external files with the click of a button or edit certain internal components externally, by opening a new sketchup instance from within the current sketchup session.
This would convert this component manager into a full fledged internal and external component manager, and not only a component library manager and would become very interesting for bigger architectural offices working with sketchup.
In conjunction with your tag manager, IFC attributes, BIM export it would be a powerful system.
There is also