I think honestly, with this game, they have a lot of back-logged content that either isn't quite finished, or isn't finished in a way that they feel fits their 'vision' for the game. Moreover with the system changes they're doing over the next 2-3 patches it'd be kind of redundant to add something that may later need changing (not saying the airship falls into that category), but equally.. System changes should be made and fixed and flattened out before Square Enix even CONSIDER bloating in all that back logged content. I imagine that's all they're waiting before they add a lot of stuff.

Or is that just being over hopefully optimistic?