Since the CMMI is in some ways a developmental model, it may help us to better understand its strengths and weaknesses if we compare it to other, more general, developmental models.
The Integral Approach, as espoused by Ken Wilber and others, is a much broader system that can be applied to individuals, to organizations and to entire societies. It too includes a developmental model, with levels identified by colors rather than numbers, as well as another dimension subdivided into quadrants.