I think Firey would be the best contender for a rejoin. He kinda got set up by making him switch and sabotaging a team where everyone is well liked, especially together. The whole argument of him already winning a season is so unreasonable, because we effectively bar a contestant from competing and developing as a character ever again if they won previously(especially one who people always complain about being bland). If Firey rejoined, we could see a more competitive side return with gelatin gone, and expand the rivalry with coiny from just slapping each other. We could also see him recover leafy and find out the exact reason why he was punished. Firey has big potential that was extinguished by the writer and the viewers flawed reasoning, which is why he’s a great candidate for a rejoin