I think that the use of "task groups" within the CMP voids or comes very close to voiding the ANSI certification for the NEC. It removes the panel diversity from the process. The small task groups review proposals and then bring them to the full CMP. I have talked to more than one CMP member who has told me that the full CMP just automatically accepts what the small task group has recommended.
As far as terraview, I think, when it works correctly it has made the process of submitting PIs and comments on accepted PIs easier, but has made the process of submitting comments on rejected PIs much more difficult. Last cycle the comments were about half of what they had been for previous code cycles, and it is my opinion that most of that is because of the process required to find and comment on a rejected PI.
As I have said before, it appears to me that the new process was intentionally designed to keep the public out of the process.