Hi, there are a couple of options which we have played around and/or implemented here.
- Get/develop your own version of iLooker so you can grant permissions as you see fit to different explores in model files.
- Generate an email/spreadsheet with this information and the link as you say and spam everyone (could be taken to the next level and you mail only the content owner/users who have viewed this content recently the relevant content which you intend to delete).
I found the sql query in the logs which the “unused content” page in Looker runs. I then replicated this through iLooker but changed the time period to 7 days less. Warned people I would delete all this content and a week later I used the UI to make the deletes (if they clicked the link then it would no longer be in danger of deletion). I also have the sql code to directly make the deletes in the application database (requires self hosting).