That’s great! A good addition to the permanent deleting of posts that was introduced officially a few years ago.
Not completely related, but would it be easy to create a new route that shows all recent uploads, especially pictures (as a mosaic/grid) - regardless of where they were uploaded to (any category, including PMs, chat…)?
I don’t have any issues on my forum, but I remember a site that allowed users to upload images. They had trouble because someone uploaded illegal stuff, and police was involved.
For this reason, they closed their site, and decided to completely prevent image uploads on their other platform for years.
So the idea here is only to monitor and be more proactive, as illegal stuff could still potentially involve legal intervention. Deleting a picture doesn’t mean it never existed 
I guess it’s somewhat easy to achieve this using data explorer and the API, but I’m thinking of a page available inside Discourse.
Or unless data explorer can show pictures in the returned table, as it does with avatars?