let non-admins edit metadata
Perhaps there should be a method of submitting updated book metadata for review. Book synopses, higher resolution covers, and proper tag data could all be submitted as people casually browse the library.
I think the way to do that will be to have users in the library (right now the users of the forum are only for the forum), let only register users to edit (as harm reduction for automatic bots) and have history of editions (like a wiki) to be able to rollback if there is trolling.
This might need also to implement a 'recent edited' list so it's easy to check the last editions and review that everything is fine.
This will need of #1 (closed).