Best way to balance Katarina.

Lower her base health. Her strength is fine, it's just that she can get away with it way to easily. A half decent Kat player can Q,E,W and then walk behind minions while you barely have time to react in that short second in a half. Also, if she's going to roam and dive 3 enemy members under their tower for the triple then live, obviously there's not enough risk in her play style. Would love to discuss other ideas.