This should have been arranged before the campaign even started. DeSantis would’ve been the VP nominee and would have been ideally positioned to run for president in 2028. All water under the bridge, of course, but now both of them have to deal with all of the criticism that went back-and-forth between them.
DeSantis would have been foolish to accept a VP slot. The best VPs tend to be low-key political figures who don’t make good presidential candidates. The worst VPs are dopey losers who make awful presidential candidates.