Remember when shen could consistently do damage that scaled with his health
via ki strike? Now he does have an ability that does damage based off of his health but its on a fixed cooldown and the hitbox is small as fuck. Shadow dash having its ratio scale with hp is not a suitable replacement for the damage lost from not having ki strike anymore.
At the very least, make shen's empowered autos have some sort of scaling with defensive stat be it armor or hp because as is shen just does absolutely no damage past 20 minutes. I never see shen ever but I'd rather see shen than maokai and irelia every single game.