I see quite a few folder requests, but I didn't see one for this yet (maybe I missed it)......
I have multiple instances where the first folder is my WBS, and the second folder would be a subfolder to that WBS. When I have multiple folders being filtered, I'd like to NOT see folders that don't apply. I currently have to "dig" for my info, or I am constantly turning the subfolders on or off. See below.


Here is another view.
Great feature request, I notified the dev team!