We all agree lee sin needs a nerf, but how to nerf him without reddit dropping trow?

I have an idea: Rek-sai has tremor sense. Shes blind, and thus, feels vibrations on the surface of the ground to locate her prey.

Lee-sin is blind. Summoners dont exist, so the previous reason for lee-sins sight is null and void.

My suggestion is to REMOVE lee sins passive, and replace it with "Second sight" Second sight; Lee-sin has no vision (aside from wards, because they magically give you the image) and locates living things by sensing their spirit.

How it would work: Every living thing - jungle mobs to lane creeps - would give both the rek-sai sonar, AND have a small 'soul' which lee-sin can see. the size of the soul is the same for every small mob, creep, and large mob. Champions and epic mobs would have much larger souls, but every soul would be the same size regardless of character model.
Terrain would ONLY be visible within 275 ~ 300 range of lee-sin, and then only visible as an outline.

this new passive would nerf lee-sin a great deal, while also giving him MUCH more power, because fog of war wouldnt hinder his 'vision' unless they moved out of range.