For anyone who is interested I have written a small paper about the theory behind the BizTalk Maturity Assessment using a generic framework I have called the "Behaviour Driven Maturity Model" and then how it could be applied to the assessment of other subjects.
The paper is on the following link:
If you would like to create a model for a different subject area based on the details of this paper then I would encourage this as much as possible, all I ask is the following:
1. Let us know your doing it so we can help tell people about each others activities
2. Make it free to the community
3. Reference back to BizTalkMaturity.com as the source of your model