So I did this years ago with FFVIII but I was a horrible liar and human being and never actually went through with it.

But I'm back and reformed and ready to take your tips.

That's right, I'm gonna replay this game - specifically the Origins version - and I intend to conquer it this time.

Rather than just making everyone do everything, I feel like I want to redo what I did with XII and VIII and make my own "Classes" or "Jobs."

That's my intention anyway of how to start. Can't guarantee how it will turn out.

But I'm open to any suggestions you guys might have on how to "limit" each other to their designated role. I've only really played through this game once, at least I beat 99% of it. Others here probably know more than me and can offer guidance.
Or if you have any other things to offer about making the game a bit more complex and fun.