One thing I'd like to add is that I think Yoshi is surprised by the comments because there are so many Final Fantasy XI stalwarts on here that are resistant to change and don't necessarily express the views of mmorpg players as a whole. Jumping adds freedom and the ability to add not only depth to quests, but entirely new quest styles. You can always tie the action of jumping to the stamina bar, and that will prevent people from spamming the jump button from those who get worried about people hopping all over.