Thought I would post this comment from Yoshida in the RPG Site Interview as it seems relevant.

RPGSite: Have you considered bringing FINAL FANTASY XIV to the PlayStation Vita?
Yoshida: Yes, currently this is all post-2.0, but because we’re doing a reconstruction of our server system, in those plans, we’re going to make sure that the servers can be accessed by outside devices such as smart phones. Not just the Vita, but also smart phones, so that kind of access will be allowed. What that will open the door to is things like applications that people can used to check their inventory, or check the market and purchase things from the auctions. Those are the things we are laying for in our server foundation, so we can be ready to implement those after 2.0.

For example, beyond that, maybe an application that lets you raise your chocobo, and then transfer it back into the game.