I've created this report from Scratch.
I have a Role that attaches to each course called Department Head. This report aggregates all courses where there are assigned and provides a quantitive summary of each course.
There is also a Sitewide Role of Dept. Head where they are all attached. This lets them run this report off themselves.
Once i've completed it and used proper code to create it I intend to release it on here if people think it is helpful