This is and important and basic Featured that need to be added.
at the moment if account is deleted there us not backup to restore since the backup is create inside the customer folder. so account is terminated there is not local backup to restore since is not out of the customer account directory. is not a good way to save the backup this is more for customer to backup their account and download not for server side to do backup.
Please add backup for local backup so backups are outside customer directory account.
also that can be set custom folder in the server to save the backups.