I'm still working on the generic CMS.

CCTS appears to be asserting a copyright in the entire CMS code. I'm not saying that necessarily goes against VISTA goals or my own. Ownership of the code may be an important part of their leverage for getting paid by clients, and getting paid is what makes it possible for CCTS to continue to serve (and perhaps even grow in capacity to produce more benefit per year for clients).

Although the CMS will have a generic or reference copy, CCTS may make customized versions of it for specific clients. This is where using Ruby on Rails (instead of PHP, as Drupal uses) as the underpinning may pay off, I suspect.