Device42 Appliance Backup retention policy/settings

It would be nice if Device42 had a way to set a retention policy for it's own backups.  I would like a way to:

• Specify how long to keep backups in days
• Add milestone backups
• Specify milestone backups to keep (Keep daily backups X days, keep weekly backups Y weeks, keep monthly backups Z months before removal)
• Protect the last backup created (if for some reason backups stop running don't remove the last backup available even after the fall off period)
• Clean up the backups that fall out of range
• Backup and retention operations should be logged