I saw that someone suggested "add Collection to Library view" but haven't read that thread. I have a different approach to what I suspect is the same goal.
When I open COLLECTIONS I put it in a floating window. The NEW TAB plus sign to the right opens similar resources. If MY LIBRARY were added to that list, (by default) we could open it and drag it alongside of the COLLECTIONS window for easy dragging. It would make creating a new collection so much simpler.
Better yet, when you want to create (or EDIT) a NEW collection a window would open with these two side by side.
thanks.