It would be great to see a new option to the Folders, Projects, Tasks and Subtasks which would be Sub-Projects. In a product development scenario there are sub-projects or phases as you will to complete the main project. While it is important to know the status of the sub-projects and duration, it makes it difficult to separate them when running reports as they are treated like projects. I have tried many workarounds but haven't seem to find a solution.
If anyone has suggestions on how you have insight into a project with phases (sub-projects) it would be much appreciated.