It's a shame though.
I remember that when Square showed the FFVII technical demo at E3, there was an uproar when they said "we're not remaking it, it's just a demo". Many people I've spoken to say that fans want a VII remake and because there's a rising demand for it Square couldn't afford not to remake it...however........
IF they DID remake it, they would not be able to change any aspect of the game, including the flying of the Highwind. If they did it like X, X-2 and XII, there'd be complaints, and even more so if they left the overworld out. They could add facilities to it, but taking anything away from the original would ruin it. That's saying if they did remake it, not that they are or would.
With FFXIII, why not bring back the overworld? It was a key thing in the FF games before X, and the PS3 is more than capable of rendering images of that quality with ease. Knowing Square they wouldn't though. Look at The Elder Scrolls IV: Oblivion. I know it's on the PC and Xbox 360...and probably the PS3 soon, but it has a full 3D overworld map and that's what I'd like to see Square do with FF one day (that's if the series lasts that long - they're adding spin offs and remakes to keep themselves going longer).
I think we'll see with the new Dragon game coming out for the PS3 called Lair. If a games developer can achieve that, Square can do. Though, if the PS1 was able to do it, why can't the PS2? Actually it can. If anyone's played Legaia 2 they'll know. You can't control the dragon you get, but you see it fly over an overworld map, and it looks pretty good. Other examples of overworld use are: Suikoden IX and V (don't know what you get by means of transport in V, but you have a ship that travels over the ocean on IX), Summoner (though it wasn't a great game and didn't have airships), and on the Gamecube! you have Tales of Symphonia (you get to control your airborne vehicles), and Skies of Arcadia. Somehow all of that doesn't tell me that the overworld is obsolete - especially if Bethesda are still using it for the Elder Scrolls series in high definition.