I think Pylova (a soft-fork of Piefed) is at the forefront of moderation tools in the threadiverse.
I think their recent addition of shareable user-subscribable block-lists is a good direction to go. I think this can be expanded to instance-level subscribable block-lists. There could be a variety of lists (CSAM, scrappers, scammers, agentics, etc.) and each instance chooses what list(s) to subscribe to or build their own for others to subscribe and contribute to. The lists would be easily fork-able so that any instance can take control of their own moderation, if they disagreed with an addition/subtraction to a list.
For some lists (like scrappers), I think automatic addition could be set up to quickly “inoculate” the rest of the threadiverse against them. Perhaps one approach could be any IP that clicks on a non-user clickable link or gets stuck(?) in Anubis could be added.
I think subscribable block-lists for instance admins could be a great way to protect the threadiverse (perhaps expanded to the fediverse as a whole or just any website in general) against any problematic actors quickly and at the first encounter (alternatively: after (x) # or % of instance admins add them to a list).
Apparently some of these lists may already exist in some form (@Christopher@lemmy.grey.fail: “I was able to implement community maintained blocklists."). So, my thought would be to make sure these lists are a standard format (if they aren’t already) that instances can auto retrieve and contribute to.
Anyone: let me know if you have any thoughts or see any issues with the idea (constructive criticism only, please).