Heya!

Lessee... why do you want jump, and which type of jump do you want?
Let's discuss it like this, because until now I see only The sake of jumping as the only reason to have it.

Personally, I'd like to have jump, a FFXIII jump, so I could jump over cliffs by simply going forward and pressing The Button to Jump.
I can't see a free jumping in game tho.