I actually think Mark Cuban will throw a wrench in everyone’s plans sooner or later. People have realized we need a business person in the Oval Office. He can take a lot of votes away from both parties.
His political aspirations died when he got #MeToo'd. It wouldn't matter if he is Republican, but since he's a staunch never-Trumper, his base (moderates and old-school democrats) wouldn't exist. Anyone extolling his platform would be shouted down, while Trump paints Cuban as the loser from the failed Apprentice reboot.