It's indeed the question whether or not people "need" it. In this Mediawiki-list, the knowledge is concentrated with the best people answering questions from easy to extreme difficult, with the same patience. If you have the same knowledge in the google-group it could work. I think the list we are using now works well, at least I'm happy with it. I don't think there would be a need for a google group. Nevertheless it's a good initiative! :-)
Gr
The fact that you or others don't need it doesn't really answer the question. Does somebody need it?
For those not familiar with Google groups, they are similar to Yahoo groups, only less commercial (looking) and with other friendly advantages. My arts community in Baltimore likes Google groups.
Richard http://BaltoCo.org/contact