Having just gotten my old Ash (who is well built) in SP circuit, I can say this.
Bladestorm should go back to the "Press 4 to target enemies in a radius and execute them." the marking nonsense is cumbersome, downright clunky, time consuming, and aggravates my hands as a keyboard and mouse player. Make pressing 4 again while bladestorm is still running cause Ash to teleport to the closest enemy to help with the murder.
I know it got tweaked in response to DE taking a stance against "Press 4 to win" nukes, but we have frames now that can do 4, 1, etc and win. (Citrine, Saryn, Octavia, etc.)
Shuriken should just have armor strip and a slash proc built in. Make seeking shuriken do..something else like make it fire more shurikens with aggressive homing at 360 degrees to function as a radial armor strip.