The Public Comments can now be viewed for those interested. http://www.nfpa.org/codes-and-standards/document-information-pages?mode=code&code=70&tab=nextedition
I have two first impressions:
1. I find it interesting that not a single comment was submitted to oppose the expansion of AFCI protection to all 120V, 15A & 20A branch circuits. Not even one.
Because people have given up after over a decade of opposing them.
2. Check out NEMA Public Comment 822 to First Revision 329. I believe this is irrefutable evidence that NEMA and it's members will put safety ahead of profit motive.
I find it laughable that would even suggest altruism is the primary motivation for mega multi-national corporations that dominate the electrical industry.