It appears that the only organizational options for folders and subfolders in Collections are to arrange by kind (Collection Set vs Collection) or arrange alphabetically. Even if arranged by kind, all of the Collection Sets are in alphabetical order followed by all Collections in alphabetical order. Within a Collection Set, all of those subfolders are also alphabetical.
I want to be able to custom organize the orders of these Collections and Collection Sets. Is there a way to do that? If not, where do you contact Adobe to make that recommendation?