Add the option to make the 'Collect Files' content block inaccessible to clients.
This would allow sales teams to upload internal documents (complex costing sheets, setup forms, etc.) that would be accessible in an approval chain but hidden from the end client.
We would upload our excel costing sheets when we create a quote then submit it to our approval team. Then, they could open the excel costing sheet before approving the document. However, once approved, it would be sent and not accessible/visible by the client.