The responsible, conscientious web developer wants her site as widely accessible as she can make it. Perhaps she knows enough to read the accessibility guidelines and she can address many -- even most -- of the high points.
But the developer seldom has the knowledge and experience to recognize the subtle, nuanced issues in accessibility.
I propose a group that will concern itself solely with accessibility. The group will allow:
Q&A about accessibility; and
Requests for site reviews that are mostly limited to the accessibility of site.
The group might result in better, more-accessible sites generally; and in heightened developer awareness in particular.