I wouldn't at all considering the Earth is reclaiming the entire state bit by bit, but if I had to choose ...
TPA. They already have an MRO facility and 737 crew base. Lufthansa and Copa are well established there, and when I was at TPA, UA was the carrier anticipated to take over the new Terminal D opening in a few years, which will also be the new FIS location. UA doesn't need to do TATL from there, just some Caribbean and Latin routes the guppy can handle most of. Continue doing deep South America from IAH.
I don't see any Florida market being a major hub for them, though. It would almost work better as a "focus city" akin to what DL was doing before the Pandemic.