@blotski After some more discussion we decided to require approval for all non-Librarian users, even those users who had already shared lessons in the past. This was done because the volume of low-quality or copyrighted content was simply too great to keep ignoring.
At the moment we will be approving/rejecting Pending lessons once a week. In most cases we don’t think there is any urgency in having lessons wait a few days. When we notice users sharing good content, we will be reaching out to them to invite them to be Librarians so that they can then bypass the approval process.