The proposal is to abolish the fees for Interface-only commentor level. Actually, a commentor is a viewer with the possibility to comment, nothing beyond that. No edits, no creation, no management, etc.
How does is solve the user problems?
It would change how companies (like my agency) can communicate with their clients (specifically those who are not active on a daily basis) or external partners over e.g. the workflow, reducing e-mails or calls. Clients (free of fees) can add records to a base via forms and can read them on Interface, but there is no chance to leave a comment.