I personally dont see why any on needs a jump button or command. Now say we do get it players will use it for a short time and than not bother with it. Now if players want this feature because other games have it well I ask you this if other players decide to jump off a bridge would you follow them?
Now again if they do add this feature players most likely will than complain " Oh where is the content, what no endgame?" Also you know this will happen you can bet on it, well guess what now seeing as we have jump every damn quest/mission may require you to jump. Oh joy thats all I need, (NOT). As of right now FFXIV has major issues and this ability to jump is the least of SE worries. Even when 2.0 is finally release there is no guarentee that FFXIV will stand a chance. It could very well be shot down by the players. I can see maybe in the future but adding jump now or at the launch of 2.0 is something that needs to be put on hold, until SE gets their act together and actually fix the game as well as adding content and endgame stuff. Until that time and until the players say wow this is a really great game, things like jump need to be put off, and SE needs to worry about again FIXING the game 1st. This is a minor feature that can wait.