I have not used the new Explorer much and figured I should play around to see what I am missing. I can see some uses for me and I have a couple of minor suggestions to improve how I would use it.
I really like that if you click a modal it opens. If you select a component contained within a modal that modal should open with the component selected.
Collapse/Expand One Level plus Collapse/Expand All buttons would be helpful.
It should scroll to selected component if it is not in view.