The improved battle system with a customizable battle command window and the option for auto-battle was a step in the right direction. They also did a great job with the voice acting which brought more depth and life to the story elements of FFIV.
The materia system was a nice addition, making playing FFVII a really great experience. The 3D graphics were out of this world and this contributed to an increase in the number of Final Fantasy fanbase.
I don't really care about Celes' outfit. What I would like the devs to look into, is some glitches breaks the game, like the Vanish/Doom bug which makes FFVI very unattractive to many gamers. Also, if they can come up with more creative summons, that would be great.
I think FFVII is the one game that got me to fall in love with the customization. I remember there was even an option where you could turn Barrett into a mage. Although, some people hated the storyline, I thought that it was pretty great.
He gets a lot of hate but I think he is a decent character. I remember he used to suck when trying to attack but his accuracy has since gotten better. I guarantee after grinding his levels he becomes pretty great.
Unlike most of you, I got into the Final Fantasy series pretty late. I didn't get a chance to play Final Fantasy I, not because I've never heard of it, but because I never bothered going back and playing it.