I have also started brainstorming the big unknown that is Contribution Model and have identified one or two things that may come in useful when the contributions start pouring in. More on this in time.
Finally, I wanted to test the upload image facility of this blog and also have a GLO V2 class diagram ideas handy when needed... here it is (click on image to see it full size):
If you have any suggestions or questions about the class diagram I would be happy respond.
Dejan