I’d like to see either Jeff Atwater or Adam Putnam (but I think Adam won’t run) or Will Weatherford...
The consensus seems to be that Jeff Atwater is the successor to Rick Scott for Governor. Adam Putnam might be the better bet for Senator, and he also the Congressional experience in addition to his now two statewide wins. My worry is that the GOP will put up a flake like Atty Gen Pam Bondi. The only other statewide candidate left would be Lt Gov. Carlos Lopez-Cantera, but I don’t know enough about him to rate him.
Of course, Rick Scott himself might feel emboldened to try, since it’s at the end of his second term, but given that he won by the skin of his teeth thanks to a pro-GOP national climate against an unpopular twit, that would probably be unwise (unless his popularity goes through the roof over the next 4 years).