@realcainmosni Sure! A lot of people are on Mastodon instances that they don't run though, so I think it would have some value, even if, as you correctly say, it wouldn't be supported by everyone.

@neil The trouble with that is there would be instances which either didn't understand or implement the semaphore where the replies would be seen, and to others you might be made to look the arsehole because there's an asymmetric presentation of the thread.

I'm not arguing against the principle. Only the practicality in a distributed network. I'm put in mind of certain legislators who have said things similar to "I don't care about the laws of physics, I care about the law of the land."