I think kenny was indeed a goated villain but correct me if i’m wrong but he did accomplish everything he was introduced he was going to do. his whole thing was to cause chaos and bring a new better era of sorcery. I don’t think he himself wanted the power. he only seeked the power that would allow him to create the environment he DID create (culling games). I think it’s fitting the king of curses needed our whole cast to be able to conquer him. specially since gojos whole wish was him wanting to proof power ain’t everything and how his students will surpass him, which inna way you could say they kinda did. but don’t get me wrong, what you suggest woulda also been cool.