So about jump.

[Felis]

I can't wait to jump and still find the jump height a bit too high.
Half the height should be good, no jump on another people heads ^^

Aside from drawing attention to your character in a way to say "Hey! Look at me! I'm jumping!" *hop hop hop hop hop* I don't really see where the benefit of jumping comes into play. Are there going to be locations that can't be reached unless you jump? Are we going to be able to jump off of high places and then get hurt? I did that in WoW once, it was awesome until I hit the bottom and got dead.

You didn't play during the first launch? ^^
Jump is good to overcome obstacles like fence, a stone in the way, a knee high cliff and much more obstacles.