Andrew, the comments I received from the other members of our team is that they preferred to work "in private" with our small group, until the docs/articles were ready, then have them reviewed/vetted by others - presumably another small group, or perhaps 1-2 experts (Brian Crall, Dave Helms, etc.?)
What I'm leading up to here, is that I think because our group prefers to work in private, I'm guessing that subsequent groups would also. I think that I would find it distracting to have comments interjected by someone who is not familiar with our models, regardless how well intentioned they were.
And here's yet another request for you. Would it be possible to have some dedicated storage space in this area that we could use to upload drafts of documents rather than having to attach them to our posts? I wouldn't know the mechanics of doing this, however I envision a subforum type area of this subforum that would contain our working docs - maybe as you've done with the "Articles" tab and the Buyers Guides? It wouldn't have to be nearly as polished as this - just a normal FTP type folder would be fine.