I will ask this in the name of sustain for Zac

Can we make the W into an ability that gives him back 1/2/3/4/5% (+1% Ability Power) of his current health for each enemy hit by the ability rather than him deal % damage. He can still deal the minimal 40/55/70/85/100 damage. I'm just asking because Zac + Lifesteal if fine, but leaves his abilities worthless, and Zac + spell vamp is just as useless, as it only lowers the cost to 3% or 2% of Zac's health. % health regen is also useless due to nerfs.