Not having such a committee in power and most likely no COC. The FSF's Kindness COC sounds good though.
Within perl we treated conference abuse privately in a seperate nonpublic group, but never mailinglist outbursts. This group had no power over anyone else. Esp. over devs with different opinions, who critized core devs over their work.
Glad to hear one programming community is handling the issues in what sounds like a healthy way.
It also requires actual human effort though, so it's difficult to do. People hate doing difficult things and prefer to be part of "witch hunts" because they're easy IMHO. Discussion and discourse is key.
Within perl we treated conference abuse privately in a seperate nonpublic group, but never mailinglist outbursts. This group had no power over anyone else. Esp. over devs with different opinions, who critized core devs over their work.