G’day,
The one problem I can see is that you have one chance to check that everything is actually working before deleting the files.
Would it be possible to have files that are marked for deletion archived/aggregated and stored on another device (USB, ext HDD etc.) so they could be either re-inserted or deleted at a later point?
This would give the users more time to make a better decision as to whether the cleaning had introduced any issues.
Cheers,
Ewen 