Possible fix to Leblanc?

i was thinking that the 1 second delay wasnt a very good idea. the reason why Zed got that instead of leblanc was that Zed can actually take hits while Leblanc is a shit ton more squishy. My idea is to allow Leblanc to deal half damage to the area she returns to on her return from distortion, but give her return a mana cost. Then have the mana cost scale down for each level. (so like 80/60/40/20/0 or something like that) Thoughts?