similar to how you can change the gear and color of the company chocobo.
just think about it, wouldn't it be fun to fly around in your personal "souped up hot-rod"?
like customizable sails, cockpits, propeller/levitation devices. maybe accessories like headlights or wheels. and what if you could make it look like other famous final fantasy ships (like FF7 highwind or FF3 red wing) and just think about the fun new crafting ideas :)