I bet there won't even be a jump button. I foresee jumping in XIV being similar to Link's auto-jump in 3D Zelda games. Those little ledges and overhangs that we hate getting trapped on now, forcing us to work our way down and around the long way will now be met with an auto-jump action and animation that will allow us to keep going and never be held-up by said ledges and overhangs ever again. That's how it will be done if the developers have any sense on the matter.