Kha'zix minor rework?

What if Kha'zix were to have his semi-out of place W changed into something that wasn't a projectile, something almost similar to Rengar's W but also like Lissandra's W where he would make a very small circle around him that would heal him and damage enemies (as burst not DoT), and evolving it would maybe make the range higher or slow isolated targets hit or something.