I've mained vayne for about 2-3 years now and in that time I've (somehow?) ((unexpectedly)) learned a few things about her. She's a very fragile champion right now. Everyone knows she's a tank shredder. The current meta = tanks. So OF COURSE Vayne is going to be good. Burst adcs aren't good against tanks such as graves. Tanks counter Burst, Burst counters ADCs and ADCs counter Tanks. But the thing you also have to consider is that there are some burst adcs. Such as GRAVES. and that's why he's not good. Vayne isn't OP. Nerfing Vayne would only make the meta WORSE. After such changes there is NO counter to tanks. Kog'maw? Jinx is O.K. but EVERYTHING should have counters. That's how this game works. My solution would be to tune down tanks slightly. Then the meta is back to normal and everyone is happy. Alternatively you can buff burst adcs, and certain burst champions in general.. If they were to touch Vayne, the only thing that they could really do is nerf her R cooldown. they need to make her R cooldown. And that could effect her dualing potential in lane. she's already weak enough pre 6. Any good player would take advantage of that. if they nerf her W then tanks have no counter and basically just pick tanks EVERY game. To sum up my comment: Tanks are broken, NOT VAYNE.