I am a big playlist user, but even I don’t find the list of playlists on the menu super appealing.
Instead, I would recommend Playlists goes back to its own menu choice and EVERY thing in Roon have a three dot menu choice to PIN. So under Pinned (where Playlists are now) you might have 1-2 bookmarks, an album, an artist, and a Radio station. Your hot things for the moment. You’d need a little button to an edit panel to delete and reorder things.