I think it would be useful to provide an OOTB functionality in Control Panel that would provide an informational tool that could help perform Documents and Media integrity checks out of the box while the server is up and running.
It would be useful to include functionality such as the following
- Verify whether Documents and Media have missing files in the filesystem, and list them out
- Verify missing Documents and Media assets referenced in a portlet, and list them out including a link to the resource.
There is no OOTB way to leverage this functionality. An administrator would have to build their own custom solution or create a groovy script.
It would be a huge convenience for administrators who want to keep their data tidied up, and to make sure that any data isn't missing.
This would be useful for aftercare following a server outage. It would be a huge help for post-upgrade checks for reassurance that there aren't any missing references.