Establishing a Workgroup
Agree that consensus model suits our needs perfectly. As you suggest, we'll need to work out the detailed process --the WP article on consensus decision-making could be helpful in this work.
My understanding of consensus model is that further discussion and rework is necessary whenever one or more people disagree. Your practicability issues will likely reflect Council members' -- who are all WE members --and likely many others' opinions such that the proposal would fail to achieve consensus if any of these were inherent problems. To avoid denials/failures/much reworking later in the process, I think we should include these practicality concerns in our charter specifications (as well as the evaluation criteria, as you suggest) -- have the Workgroup address these up front. As with good learning design, the specs grow out of the criteria for evaluation (Ben, I've been reading Wiggins and McTigue "Understanding By Design" that I learned about on your distance lang learning page :-).
Will think more about evaluation criteria.
Agree, would like to get some more opinions on these topics.