I always get the impression (and I could be wrong) that there is notably less dialogue in the older games than the ones with voice acting. The characters in FFXIII for example seem to have a crapload of dialogue that allows them to have more to their character, while there are characters in FFVI who have very little dialogue and are still very much loved. I wonder if less is more in those aspects, and if FFIV were to be remade with voice acting, would they have to buffer out that dialogue a lot? I wonder if they'll have to do that with FFVII too - add dialogue to make things flow a bit better with voice acting.