Leave the job system as it is in the original. I really, really, really want SE to make a game where you can have massive replay value by giving you the option at the start of how you want to play the entire game, job-wise. It really makes it so very different. Then, to add to all that, I would have them all with different personalities. Sort of like Mass Effect, it could affect the comments made as you go through your journey and you'd get even more replay value. Throw in loads of sidequests and give it a completely redone 3D environment as if it were a brand new game. Throw in a couple of new areas just to boost sidequests, actually. I really think FF1 has a lot of "remake" value without it being just a simple thing. I think there is potential to go full hog and let it be the best game of a new generation. The game has so little that it allows for so much growth in this kind of way.