Jumping. Ugh.

It should have absolutely no use or affect on combat. Please. That's one step in the direction of making this some fast-paced action game that XIV is NOT. Honestly, if that is what you are looking for I hear TERA is looking for subscribers.

Outside of combat it should be simply a cosmetic animation. It lets you get over little cliffs if you don't feel like walking around them or hop down to a lower area. Mainly so it doesn't look like how someone described it earlier where "you are magnetically stuck to the ground".

Also I think the height for each race should be normal looking and not some exaggerated zero-g jump.