Yup. One of my favored options, if you are running your own community. There are some topics that just increase conflict and are unresolvable without very active referee work. (Religion, Politics, Sex, Identity)
2) This is fine ? Ah, you are considering a platform like Meta, who has to give space to everyone. Dont know on this one, too many conflicting ways this can go.
3) One thing not discussed enough, is how moderating affects mods. Your experience is alien to what most users go through, since you see the 1-3% of crap others don't see. Mental health is a genuine issue for mods, with PTSD being a real risk if you are on one of the gore/child porn queues.
These options to a degree are discussed and being considered. At the cost of being a broken record, more "normal" users need to see the other side of community running.
Theres MANY issues with the layman idea of Freespeech, its hitting real issues when it comes to online spaces and the free for all meeting of minds we have going on.
There are some amazing things that come out of it, like people learning entirely new dance moves, food or ideas. The dark parts need actual engagement, and need more people in threads like this who can chime in with their experiences, and get others down into the weeds and problem solving.
I really believe that we will have to come up with a new agreement on what is "ok" when it comes to speech, and part of it is going to be realizing that we want freespeech because it enables a fair market place of ideas. Or something else. I would rather it happen ground up, rather than top down.