OK, well I can't say I'm too surprised there hasn't been much response to this post. This late in the year everyone is busy of course.
But I expect a larger reason is that while there might be interest in joining a SIGMAA if it is in place, there is less enthusiasm for volunteering to start one. A couple of people have told me privately that they'd join but have no interest in creating a new SIGMAA, or in serving as an officer if one is created.
So let's do this: As a way of measuring the interest without asking anyone to commit I have created a one-question survey on SurveyMonkey. You can find it here.
Everyone reading this please open the survey and click on the appropriate choice. It will literally take 5 seconds. In a week or so I will read the results and report back on this thread. It looks like there is sufficient interest we can discuss how to proceed from there. If not then I'll drop it.