Can we create PRIVATE folders under Documents yet?

We would like to have the ability to have "Private" working folders so our stakeholders can't look or share at the drafts in progress. I keep reading replies to this issue as going through Proofing as the solution. That won't work for us because our stakeholders need access to the projects within Workfront and not just access to Proofing. We could block their access to view the Documents section completely but we want them to be able to upload supporting materials if needed. For now, we are renaming the folder so they are deterred from accessing them but we know that nosey stakeholders will always be there. I have seen this as an unanswered issue for years now and I'm hoping by now there might be a solution.