I'd like the ability to hide a document and its subordinates without hiding all the documents in a project. This would allow a project manager to create different projects within the one umbrella project without having to create a bunch of new projects. It allows the person to keep all their projects together. It also let's the project manager reveal documents one at a time as they make them without having to develop every document in the open for that project.
If this is too much work, I understand.