Based on my understanding of NIP-29, one thing I didn't like about it is if the relay goes then the created hub goes with it. If the relay doesn't like the hub I created, then they'd just block it and then i have to create the same hub again on a differen't relay as the new home. I'm relay hoping my hub now basically. Unless I misunderstood how NIP-29, that's how I'm seeing it at the moment. In regards to how I'm planning to build that Discord alt differently, when you make a hub, it's an event with relay hints inside it (multiples), and posts reference the hub ID and push posts to those hint relays. For moderation, it'd be based on whitelists and/or blacklists, or rather depending on the hub structure then basically a 'access control' list (in regards to encryption / what can be seen, tree-like access tokens / similar to how MLS works if i remember right), basically client side showing/hiding based on access control list, and encryption/decryption based on who's in the tree and then token always gets updated everytime the tree gets updated and participants would know/get informed of the token. I hope I explained things well, sorry if I didn't.