I can't remember if we ever discussed this on TT 2 but even if we have that's never stopped us from doing it again here.Another thing that separated Final Fantasy from other games was the setting - from the beginning it shown a predisposition to mix fantasy and science fiction
So there has always been that mix in the Final Fantasy games but the balance of that mix has changed from title to title. So which Final Fantasy is the most fantastic i.e. has the most fantasy and the least sci-fi?
For the purposes of this thread I don't think airships would automatically qualify as sci-fi. For me if it is based on a sailing ship then that is more fantasy than sci-fi. But if the airshp is like a space ship or modern ship or airplane then that is definitely more sci-fi to me. An airship based on a a sailing ship but that can travel to another planet is also more sci-fi, IMO.
(Also don't forget that spin-offs are fair game in these threads.)