Twitter could easily adopt some clique-based management where people could see public conversations between members of the clique but would require an invite to

Twitter could easily adopt some clique-based management where people could see public conversations between members of the clique but would require an invite to reply to such a conversation or show up in related timelines. Of course this wouldn't stop direct attacks or people talking indirectly about other people, but at least it would stop randos from sealioning.