There is no reason for anyone to have a ping over 100 at any point in time ever.

If someones ping goes over 100 for more than 1-2 seconds autokick them. boom fixed.

At least introduce it in duel and ranked.

Seen it all. People turning on downloads mid match to win. Seen a guy literally only lagging whenever he was attacking but having perfect parries. Complete animations missing.

100+ ping has nothing to do with playing the game - rolling dice is more interactive. Removing players at that ping from the match is a nobrainer.