A Naval Combat/ Sailing Idea

[Edax]

I see your point, but I'm not sure this is a case of "you need to crawl before you can walk."
They're so different and unrelated I could see is having naval combat without mounted combat.
Heck, because there are already systems in place to fight WITH your chocobo, it'd seem kinda weird if they eclipsed that with combat ON your chocobo.

My point was that this game is absolutely not optimized with vehicular combat in mind. The kind of gameplay depth you get would be something akin to a FFVII (original) minigame.