Just a possible idea for Aatrox

I'm a huge fan of Aatrox, personally. Very fun champ, really feels good to play in my eyes. One little thing relating to his passive that I thought of that I thought I'd share is:

What if he had a normal amount of attack speed for someone with no attack speed steroids, and instead of his blood well giving him attack speed, it would lower the health costs of his abilities? This would also add a curve to his passive stacking, since he gets blood in his blood well equivalent to the amount of health he loses from casting abilities.