I was playing it about half an hour ago (beaten the dark aeons up to Shiva, Bahamut wiped the floor with me so I'm going after Yojimbo instead).
Why remake it? I mean, the graphics hold well enough now, it's bad but not terrible to look at, hell thinking on it, it looks better than some PS3 games I've played. A remake seems utterly pointless and a case of playing it safe and easy.
Remake a game that needs/deserves it, even 9 is graphically okay but it's far back enough that I would LOVE to see it redone. Of course I'm another VII fanboy myself (hey it was my first) and that would be my ideal remake but I'd take VI as well...
Of course, they could make the voice acting good and if it's a proper remake and not just an HD buff of shininess then it may work well enough, I'd buy it if it was, if it's the same game made slightly prettier (a la GoW) then sod it, I'll stick with playing my current PS2 version cheers...