In one of the interviews it was said that he pressed the space bar and made his character jump, but it had no animations yet so it just floated into the air.

My point is that why would it be an emote like /jump if it's on the space bar? This decision was influenced by most mmo's ability to jump, and even wow has been said to be an influence by yoshi. So, wow being an influence, jump being on the space bar, the maps being completely re-done(which would allow for terrain to be able to jump up onto and more freedom in your movement). How does this not sound like an actual useful jump thats not just a /jump?