I'm not sure how any writer would respond well to criticism of something they work so hard to present. What would that look like, I wonder, if a writer were to come out with "Yeah, that one was a piece of crap!" Heh. Probably wouldn't have a job for long. They admit when they've flubbed up, and I did hear Virgil say A Thin Line was the ep he was least proud of. I just don't expect any of them to come out and say that their writing is bad.
Comparing CM to BB is kind of apples and oranges, considering the latter is part of the new television renaissance and looking to break rules and re-make television drama as we know it, whereas the former is part of the old guard. I doubt CBS would let them take CM down any similar road, inasmuch as the two of them are fundamentally different shows.
I am in agreement with the "too many cooks" point of view. I think that's highly relevant to consistency, and just flat out true, in our show's case. I'd get rid of Rick, Kim, and Bruce. Of the three, the only one I think has a chance of maybe leaving would be Kim. Rick is too close to Erica and Bruce is far too popular with the other writers.