Jax's most fleshed out design was MK9, no question. In that game Jax really had blend of different styles; he could fight from a far or upclose which makes him well suited for the variation system imo. He could have style that is geared towards his GPs and projectiles, and another style that is focused on his pressure game which would utilize armor on his special moves making him very scary upclose. And finally he could have a style that makes him a "real" grappler, and I say that because in the past MK games Jax's grabs were just normals that aesthetically looked like command grabs, but in MKX NRS wants to make chars with unblockable/command grabs. Who fits that bill better than Jax! Basically there is a ton potential with Jax MKX design this time around and I can't wait!