I did some ideation some time ago re: #fediversity:fediverse-futures and still tracking related notes when I bump into them. See:
The discussion started here: Federated Moderation: Towards Delegated Moderation?
Maybe there’s something to it that you find useful 
(Note, there is a bug on Lemmy where all but one of the 32 comments do not show up, cc @nutomic )