I was just wondering if people kept sub-projects within projects? For example, my main project is "Deliver Fund Raising Data Mart", but there are phases and subject area that are easier to track. Right now I have two sub projects, "Research Fund Raising" and "Draft Data Model". Each of those has many NAs, and the "Deliver..." project has nothing but sub-projects(for now at least).
It seems obvious, that if a project has no NA's, it's not a project, but Deliver the Datamart is the real project. The sub's are just there to group NAs into logical collections of related activities for ease of tracking.