Per @Lioness, I have been thinking that some of this is indeed "How do I run group events" stuff, yeah, that covers like half of my points there, but there's some pretty particular pagan concerns in there too.
Still, if anyone has any resources they might suggest, even for 'how do I do group events' more broadly, I'd be interested.
And if anyone has any personal experience with this... Maybe we should all put our heads together?
(Feel free to boost. c.c)