Moderation of files, option to message uploader

[Puppeteer]

For the moderation of files, we have a mod team that will be checking member uploads for a few things, such as description, keywords, file type (ie uploading an exe file and describing it as a picture).

It would be great to have an option when moderating to hold a file in the moderation queue but to notify the uploader that keywords need updating, before the file can be approved. Maybe change the status to pending.  Ideally this can be entered into the moderation log so all mods can see the status.

PM notification is probably fine, with a pre-filled PM saying something like "Dear member, your file %filename, cannot currently be approved.  The following is required before approval can be completed:"

And then the mod can add a quick note such as "Keywords require synth and object type as a minimum - please see <link> for details."

We are expecting quite a few files to be uploaded and I'd like to push the responsibility of filling in required fields to the uploaders, rather than the mods.  We are preparing a document (and forum post) detailing exactly what is expected (which will be available from the <link> in the example above.  Is this possible?