Yeah, if that was how things would go down, I would be happy. Unfortunately, I don't think it will.
It would actually me your Realignment theory too just in a radically different way because DeSantis is a different type of Republican who doesnt really fit the Reagan/Bush paradigm at all.
That is why I made that post that I believe that Republicans shoot root for this result : Trump or Pence narrowly losing in 2020 but Republicans either keeping control of senate, or Democrats controlling senate but only by a 50-50 margin so Manchin will keep the far-left agenda in check . Then in 2024 Republicans come back with someone like DeSantis