Kha'Zix

Kha'Zix is a dead AD assassin. He's outclassed because the counterplay that stops his natural power is too easy and natural to achieve, and he has no realistic way to capitalize on his strengths, players have to rely on their opponent making mistakes. Kha'Zix is too dependent on enemy play and cannot take much initiative in his hunt to get ahead.

I propose;

Give Kha'Zix isolation bonuses outside of his q.

Make his passive gain damage on isolated targets, his w could home-in on isolated targets (think urgot )

Give his w an increased heal radius and strength against isolated champs...

Make his ult stealth work on a charge system like corki's ult, (maybe less frequent charging) max of 3

Leveling/ evolving his q decreases enemy isolation radius.

Damaging people with ultimate procs forces them to be isolated for 'x' seconds

Leap's cooldown is reduced when attacking isolated targets instead of takedowns.

Make Q not interrupt movement

Make his ult a short range dash in addition to stealth, (think Vayne )

Make it so that not evolving E is viable. A bruiser kha'zix where you build and evolve to be a tanky predator too.

Any of these changes would be big improvements and add some usability to kha'Zix to maybe compete with God Tiers like Zed Yasuo or Lee Sin

TL:dr: Kha'Zix needs some love, Give him some love.