My experience is that very few people use the Mini-Bridge panel because it takes up too much room.
Furthermore, it may be endangered because it's built on Flash-based extensions, which are now deprecated. It was already removed from Photoshop for that reason. Whether there's enough interest to re-write it in InDesign is problematic, in my opinion.
I use it all the time, but then I can't imagine doing production level layout on a laptop.
very few people use the Mini-Bridge panel because it takes up too much room.
Also, you can load your cursor via MiniBridge and close the panel—select any number of items, drag to the page and close the panel. I think that's what the OP is trying to do via the round trip to Bridge and Finder.