It's not a "normal" thing to have a discussion group for a school (that I know of). Most things should be addressed in meetings if there are concerns. That way we can have a good group discussion with the right people present. Email is so easily misinterpreted, and reason why meetings are often more productive.
We ultimately want to make sure the google group is used for benefit of all, and serves it's purpose. Since we have lost so many people because of it, we felt something needed to be done. We need to make sure we have good lines of communication open, but we also don't want losing people because people get offended.
We just want things to go smoothly, and for people to enjoy our discussions, coordinate great events, and help people stay connected.
Please continue to ask questions, and let us know of your concerns. We'd like to address them in a way that benefits everyone.