This seems like it should be easy to do with an applescript, but to date I’ve not found such a script.
My primary preference for folder/project structure is to have a Year folder, then a project for each month, with special projects done as smart folders based on year and tags.
At a minimum I’d like to copy the folder, project names, into a new folder. As far as I can tell, folders are the only nestable objects.
Aperture 3.2.4 Snow Leopard.