This is a very strong set of guidelines.
I have only a minor nitpick, at least at the moment:
4 Your off-site behavior may impact your ability to participate in this community.
We expect that your off-site behavior as it overlaps our forum community to be inline with guidelines here. An example is coordinating harassment of our members off-site. It is unwelcome and will not be tolerated.
I think the “as it overlaps our forum community” could stand to be in the heading text. Without that clarification it kind of sounds like you’re gonna try and narc on our Facebook posts even though that’s totally unrealistic.
Overall feedback is, though, that they are simple, yet cover a ton of ground. It speaks a lot of our unspoken agreements which I think is really valuable. I especially like 2. as an entire section!