Hey, welcome to Smogon! We're happy to have you
I don't want to clutter up the OU VR or make this a personal attack, but in your nomination of KyuB to A, you never mentioned what changed in the meta to make him better. I'm not disagreeing or agreeing with you, but your post states all his many pros. I recommend highlighting a new way of using him, the decreasing usage of his checks, a clever new set, etc.