I hope they add jump and actually do something with it.

Jump is a great way to add interesting content in the game : adding platform parts in dungeons (whoever is in charge of planning the feature has to play DDO), allowing secret places or artifact to be hidden in interesting ways (think of those collectibles in EQ 2/Rift you can find on top of trees), and even add a dimension to strategic battles (jumping on low gravity could help avoiding some earth based attack). Using it only to solve the terrain design problems would be a waste.