Inactive Group and User Removal and ability to remove OS Folders when deleting Groups

Hi, 

Would like to request ability to have more info on Groups to be able to see which have no users, have not been accessed in some time (6 months or some timeframe), and ability to delete inactive groups with no users that also deletes the OS folder that the Group was using. Right now, if we can manually find groups that are no longer being used, when we delete them the OS folders are still in the FTP Root. We have a lot of folders we can probably remove but don't know how to see if they are being used by groups (or not) to know if they can be deleted from the OS to clean up our FTP Root. 

Thanks for considering this request - please us know if we can provide more info or help out.