It definitely should not be released on the GBA. Square isn't crazy about its remake of FFIII the way it is about its FFI and FFII remakes, which have been released in four forms so far--so FFIII might only be released on one machine. In that case, it would be a waste for that machine to be the GBA, which is inferior to the SNES in graphics and sound quality. It was fine that Square put the FFI and FFII remakes on the GBA because they'd already released them for a respectable machine like the PlayStation. Considering this remake will probably only appear in one form, it should be on a machine with capabilities comparable to at least the PlayStation, and the DS fits that bill.