One piece of the puzzle would be VICO's (I think this is VICO's) notion of a Model Progression Specification.
Architecture is a process of articulation and specification. This notion is a great way to think of BIM as a process - that is to say that you don't have to and shouldn't have to decide everything today. This tendency is THE BIGGEST misconception anyone can have as to what parametric design software is or should be. The MPS is one framework that assists in this regard because its about sequencing the work in a sustainable workflow. You could use this as is or adapt the idea to your own enterprise.
See also:
http://www.buildingsmartalliance.org/nbims/
Think Like a Spec Writer
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