Can we do something about animations that after death don't do dmg?

For example W, after death and full animation, it just don't deal dmg. It's often crucial to kill someone and get 1 for 1 while your W just don't deal dmg anymore even if its fully animated.

E after death, and about being shoted with circle on the ground, just don't knock up and do anything, it just dissapear.

I think there are a lot champions with simillar problem. Just I know these 2 from experience.