I'd actually like to have a warning shown to people spam clicking with swords.
Perhaps every time somebody clicks a certain number of times in rapid succession, they'll receive a line of dialogue in their chat that informs them that they're doing it wrong.
For example:
'This is a 1.9+ game - Spam-clicking is ineffective, try timing your hits! For assistance, toggle your combat indicator via your settings'
idk, spam-clickers are quite annoying
@MagnificentSpook 's idea btw