[community] proposing techniques for wcag

[Mark Weiler]

I've been reading the official WCAG 2.0 documents closely. 
Does anyone have thoughts about how the WCAG sufficient techniques or common failures are actually identified, developed, and verified as addressing issues faced by people with disabilities?
For example, I could imagine someone proposing a technique for meeting a WCAG success criteria then creating a test case that is distributed to various usability groups to verify.  This would be something like the Benchmarking Tools and Methods for the Web project.
Mark