A normal WoW-like jump is not necessary. Any kind of jump is not necessary when they fix edge collision.

However, I would like to see the jump they had in FFXIII and apparently FFX-2 where you go to an edge/ledge/spot and press a key and it'll give you a cool little jump animation. That would be great IMO and would add an extra layer of "reality" to the game and would allow for awesome crags in Thanalan for you to jump across