Straight from the director of the original version and producer of the remastered version, Yoshinori Kitase!
Please tell us about how FFVIII came to be remastered.
(Kitase) Thinking about how we want all the fans of the original games in the FF series to enjoy them, even though the hardware has changed, we started planning for remasters of FFVII, FFVIII, and FFIX. The releases of FFVII and FFIX both proceeded according to plan. But for FFVIII, the move to a higher resolution on modern hardware really raised graphical quality across the board. We kept tuning the game as much as we possibly could within the limits of the porting process, so that the models and motion capture wouldn't break down. I believe we achieved a high level of quality that will make fans satisfied.