Improve File Browsing - Filter Out Pointless Files and Folders

When browsing a favorites folder on a network location, I only want to see media.  All other files and folders should be hidden  If I designate a folder as “Video” then I only want to see video entries.  If it’s a non-video file, it should not show up on the list.  If it’s an empty folder or a folder that doesn’t contain a video file anywhere recursively, it should not show up on the list.  If I am looking at a list of folders that each contain a single video file, the thumbnails/posters should reflect that video, not show a folder icon and no poster.  And selecting one of these folders should play that video instantly.