Beehaw has their own vibe going on and that's fine too. I wouldn't expect them to refederate with us anymore than with .world. Don't hate them for it.
I do believe we run tighter moderation after expanding the team, so I think refederation could be possible with infosec.pub if we reached out.
There's somewhat of a flaw in the report system when a local user commits abuse on a remote community and as such, a matrix back-channel is kind of a necessity for now. I think as long as we make sure to have that it should be possible to make this work.