I have a simple and fair idea for Vayne's w
1- Make it active 2- Create a cooldown to her W that is doubled from the duration she uses 3- Make it Physical damage { which is the actual solving and won't get hated anymore } 4- give her attack speed buff passive that always stays 6- reduce the 12% maximum hp
That's it, after this happens to her she at least have some counters against her. Nobody would struggle against a vayne in lane anymore.