The issue with moderation is that not everyone agrees. Moderation should be plug-in and multilayer. Everyone should be able to choose which moderation they trust or distrust.
Full p2p is technically complicated and does not work well for small devices not always connected, we should keep servers to host the discussions.
The servers should be able to subscribe to a moderation. You don't want to host a discussion illegal in your country gor example. Users should also be able to move servers painlessly. If the users trust their servers with their identity, it does not need to use crypto for user identity. On your profile page on a server you can link other servers identity and that's enough and simpler.
If a discussion group is private, it should only be hosted in servers of their members and not elsewhere.
I've been toying with similar ideas lately (haven't we all..) and I was thinking of also making user identities distributed. Or rather you create your identity, for example a DID, locally like an SSH key. Then similar to trusted lists of banned users you would also have trusted lists of verified users. So if I want to be verified I have to find a trusted verifier and complete their process (e.g. captcha and an email, or even a full passport check). This would also allow connecting accounts to actual people across the system.
Full p2p is technically complicated and does not work well for small devices not always connected, we should keep servers to host the discussions.
The servers should be able to subscribe to a moderation. You don't want to host a discussion illegal in your country gor example. Users should also be able to move servers painlessly. If the users trust their servers with their identity, it does not need to use crypto for user identity. On your profile page on a server you can link other servers identity and that's enough and simpler.
If a discussion group is private, it should only be hosted in servers of their members and not elsewhere.
I started working on such a system https://github.com/mildred/disputatio.nim but beyond the technical stuff I have no idea how this could gain adoption.