How to make Kai'Sa's "E", Supercharge, feel smooth af

Alright so ofc this is all hypothetical but I think Kai'Sa's "E" Supercharge just has way too much going on with it early and not enough going on with it late game to really pop off or make plays. So, below you will find my opinion on how it should work.

Kai'Sa feels extremely clunky with how supercharge works right now. You find yourself in situations where stopping attacking is fatal to your team except the attack speed is ultimately necessary. This is especially a problem pre living weapon.

My suggestion is to change the move speed gain into the living weapon category and then remove/reduce the charge needed pre living weapon at the cost of some attack speed gained by the ability. Also allow Kai'Sa to interrupt Living Weapon Supercharge with autos or abilities at the cost of her invisibility, extra move speed, and extra attack speed.

Kai'Sa Supercharge would then read like this.

Active: Kai'Sa charges for .5 - 0.25 (based on bonus attack speed) seconds, After charging up, Kai'Sa gains bonus attack speed for 3 seconds. Kai'Sa's basic attacks reduce Supercharge's cooldown by 0.5 seconds.

Living Weapon: Requires 100% bonus attack speed to upgrade – Kai'Sa charges for 1.5 - 0.75 seconds. Supercharge grants Twilight Shroud invisibility while charging, during which gains bonus Movement speed, increased by 0% - 100% (based on bonus attack speed). After charging up, Kai'Sa gains bonus Attack speed for 5 seconds.

With numbers scaled down to this. Min. move speed 40/45/50/55/60% Bonus Attack Speed 25/35/45/55/65% Bonus Attack Speed with Living Weapon 40/50/60/70/80%