as a Linux user I am disgusted by doing the same task more than twice. If I need to do that, Ill write a script. Right now, everytime factorio is updated (and we play experimental, so it happens from time to time) I needed to connect to the server, stop it, update, etc.
I have written a script now that lets you call a specific homepage which will trigger an update script that checks for a new version and takes care of shutdown, rerun, etc. But I have to start factorio, call the URL, etc.
If there was any output like "Player tried to connect with version xyz" that would be an output I could react to to trigger the version check. So it would be a nice feature giving an output like that

Best!
Markus