My 2 Cents
I Do agree with many of our members on this one, that Areas of Focus are the bigger "bucket" for the list of tasks and projects you mentioned in your original post. Some examples of my Areas of focus are:
-Program Administrator for the David Allen Company
-Wilderness Quest Leader
-Membership Services for GTD Connect
Within those domains, I can then break out my projects and actions from there.
If you have not tried out our free trial on GTD Connect, I would recommend doing so and checking out some of the content we have on this topic: https://secure.davidco.com/connect/tag/areas+of+focus
Keep up the great work and exploration!