I hate to be the bearer of bad news, but this feature request has been declined.
Warren you need to be fired. This files tab is the main problem I have using your teams, which seems to be pretty good. I'm going to a conference next week and talk to Microsoft about firing you. All these comments and your declining this request. You must have never used SharePoint and know nothing of meta data. Folders are BAD. YOU PREACHED THIS FOR YEARS. YOU MAKE A NON MOVEABLE FOLDER AND NO ABILITY TO USE IT WITH VIEWS. YOU PUT A BUNCH OF FILES IN IT AND ITS A MESS. THEN YOU NEED MORE FOLDERS. BUDDY YOUR FIRED.