Additional executive leadership years in Florida are worth 100X that four years in the do-nothing VP role would do for him.
There is no better grooming position for POTUS than being an energetic governor of a large state. Except maybe being CEO of a corporation like Trump was.
Like Reagan when he ran in 68, he wasn’t ready. I think he needed to serve those two terms as California Governor to prepare him to be the President he turned out to be.