even jumping like FF13 would require player animation and all the armor to be redone and re-rigged on the 3d models. i would rather they make the art department spend the 2-3 months work on such a thing to introduce new montsers and and battle system animations instead.
i think this whole jump business is trivial. the game was never designed around it. i don't think any FF game was designed around character-based freedom of movement. they were all designed for stuck-on-rails story telling with fantastic battle mechanics. let's wait till they get this game fixed and then see about character freedom, is my final say on this.