1. Each Organisation-Member is able to read the billing details of the organisation. This should be restricted. We facing problems with our governance, because each member is able to get details about billing in MongoDB Atlas.
2. As an Project-Owner, you are able to invite new member to you project and so implicitly to the organisation. But you are not able to delete member from the organisation. If you delete a member, he has still access to the organisation and is able to read the invoice. Even if that member has not access to any project.
3. Each member gets the invoice via mail. Again this is not a good idea from governance perspective. You can only restict this, by adding (only one) "Billing Email Address". There should be a solution, to send the invoice only to project owners or something like this.