I agree with most of your points, but there is absolutely no way to prevent discussion. Even if it is somehow blocked on LW, it will happen elsewhere.
there is absolutely no way to prevent discussion
I didn't mean: "you are not allowed to discuss this". I meant: "this is our decision, and it's final; you can discuss it if you wish, but it won't change the outcome".
In other words, I recommend against deciding a penalty for a specific case by a community vote. Because it could easily become a poll about whether the offender's faction is more powerful than the victim's faction, or vice versa.
Below is a message I just got from jackk. Some specifics have been redacted 1) so that we can discuss general policy rather than the details of this specific case 2) because presumption of innocence, just in case there happens to be an innocuous explanation to this.
So... thoughts? I have mod powers, but when I was granted them I was basically just told to use them to fight spam; there was never any discussion of any other policy, and I don't feel like I have the authority to decide on the suitable course of action without consulting the rest of the community.