I personally hate the FF spin-offs that have been done (like beating a dead horse to me), but that doesn't mean a good one can't be done. It would just need to be as original and fresh as the first story. Which FF do you think is the strongest to redo? I've been thinking it might be cool to do a Villain Quest (fighting the heroes, where I might DM the heroes or good forces of the world, or trying to destroy the world instead of save it), or a Descendant Quest, where players have the option of playing children of the original heroes, or just in that time period.