Not implementing server-level blocklists is almost a guaranteed method of getting your instances added to federated blocklists. I see that this is not ActivityPub compliant, so presumably this would only federate with other Chatternet instances? If that's the case, I recommend hurrying to implement a solid product vision, because otherwise "no deplatforming" is your primary sell, and the people who are buying are perceived as folks who have been deplatformed already. It's a hard problem right now to get some people to separate "free speech" and "hate speech" in social media, and until that's got a solution I'm not sure a slightly-different protocol will move the needle.