No sequels, no spin-off plots, no reusing plots or worlds or characters (except for Cid).

Mine would begin fun and whimsical and lighthearted, and I'd have it maintain an air of whimsy as it progressed, but I'd contrast it with some deep, dark, possibly disturbing scenes or circumstances. I would really like to hold the player emotionally ransom by presenting the story both from the point of view of the protagonists and the point of view from the "antagonist"; I would either a) not have a real antagonist and just have two sides against one another, or b) the villain would have a damn good heartstring-tugging reason for the chaos he's causing everyone with whatever it is he's doing. Straight up evil is all well and good, but I love the idea of the protagonist not wanting to actually destroy their enemy because they pity them or understand them in some way, even though they've done all of these terrible deeds and need to be annihilated.

How would yours go? What super cute Final Fantasy creature would you feature as a companion? Would your lead be male or female? What mini game would you have? If you can't give me a full story, give me a scene, a boss fight, a moment of struggle, anything. Let's hear them!