As of now the once a user deletes the flow, the flow will not be visible to anyone, except in the database. But the flow is soft deleted in the database. So can enable the option for admins to see all the deleted flows and recover those flows if required, so that in case some one deletes the flow by mistake then admins can retrieve it by recover option. This has to be an option by check box, where they can recover those flows all at once if it is a folder. This option can also be given to folder recovery where they can recover all the flows in the folder.