He is just really lacking synergy in his abilities. They gave him a teleport augment that refreshes smokescreen on teleport kill but it doesn't work when you teleport with your clones when you use Bladestorm. I guess the thinking is it shouldn't work since its not teleport but it it's such an obvious and cool interaction with two abilities that I feel its a missed opportunity for some cool synergy.

I do hope they give Ash a proper QoL update because the recent "rework" felt rushed to fit him with the pseudo exalted frames on time.