From support ticket:
It would be useful to be able to create directories in Playlist an in Schedule in order to classify items according to department who create them.

We don't want to use different workspace to seperate items according department because a monitor can be in only one workspace, and we need a monitor to be parametered by two different department.

This would be a huge benefit for easier playlist (and layouts btw) to be able to assign them into the same folder structure as the Media files. I tend to keep things separated by clients and locations.