Flicker Strike improvement/MTX

Hey GGG, thanks for all the great content so far.

It would be awesome if Flicker Strike default or an MTX left a brief afterimage of the character.
Maybe a blurred, semitransparent or a shimmer afterimage or similar effect.

That adds the feeling of speed for using the ability - and would look damn cool as well.

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A quick thought on how it could be programmed. I guess the formula for how long the afterimage lasts could start at a base (eg 0.4sec), that scales down to minimum base (eg 0.1sec) based on attack speed.
That would then add to the feeling of the skill improving as you power up.