Just think of how much drama could've been avoided if Oda stuck with the original design he'd planned for Yamao.
An ugly little man, clearly intended as a gag reveal as Kaido's underwhelming son. But who knows...Perhaps after Oda saw the tumbling sales and how disliked Kin' eflop was, he decided he'd be better off hiding his shortcomings behind big tits and a Nami face?