Like when Artur Szpilka put up a slickness masterclass and made Wilder trip over his own feet. It reminds me how in action movies the martial arts master makes his opponent fall on a pile of manure by only evading his attacks. Truly beautiful mastery of combat sports, I'd say.
Nope. There are rules. If you're slick but can't land a punch, it's not much use to you. If a punch is landed, it's a knockdown.
Awarding knockdowns due to a slippery opponent... That soumds brilliant! Sure! Implement that right away! That's not stupid at all!