Honestly, as fancy as it is, Ward Jumping completely removes most of Lee Sin's counterplay
His Q needs to be unreliable for the amount of damage and sticking power it gives. There's a reason he wasn't designed with a ground-targeted gapcloser.
The ability to jump to a ward and then slow someone prevents you from actually dodging his Q without flash, which removes pretty much all of your options for actually surviving him. As fancy as wardjumping looks on camera, it's not particularly difficult to do, nor is it particularly fun to play against.
I really think they should remove it and compensate other parts of his kit. He's way too strong when the meta remotely favors him because of his ability to ward jump.