Ahri's W needs some help

Hey, i'm a huge ahri fan, and i wasn't very appreciative of the 3.13 nerf on ahri that occurred a while ago. But i'm not here to rant about that, i'm here to suggest maybe posting ideas on how to fix ahri's w, which, in my opinion, was nerfed to the point where it has become a rather mediocre ability. My idea is that her W steals magic resist, thus allowing her to do more damage to her target while making her a little more tanky. But this is just a thought tank. Maybe it'll get Riot's attention, but i'm not betting on it.