As i haven't started in on the final chapter of ffiv:tay, i can't imagine that there could be much of a game there. it seems like not much happened during those 17 years. certainly nothing worth making a game about. no super villains appeared and tried to take over the world until TAY.

But i wouldn't mind a game set in this world's distant past. when the lunarians first arrived and zeomus first had to be contained. maybe the main character could be cecil and golbez's father kluya? and maybe via some clever device our fave heroes could travel back in time and help out?