How to balance new WW :

Make his Q jump not ignore CC's, nerf his E CD and/or damage reduction.

Fix his ult bugged hitbox past melee range.

Then he'll be in a pretty fair spot, as it is his Q/E hold too much power and he has some critical bugs on his ult hitbox past 500 range or so (and fixing it would make it stronger, so the Q/E nerfs to offset that).