Vayne's not the issue just so all you whiners stop crying
The meta is shifting in her favor. That's not a reason to try and get her gutted. Every champ has their sparks when the meta changes around them.
Games go on longer now. Vayne is better the longer it goes on. Tanks are the meta now. Vayne is a tank shredder. Bork has become a core item on just about any ad champ these days because the item is just super strong. Vayne's core item is bork.
Nobody was whining about Vayne when she got that small buff on her (I think W?) because the meta revolved around assassins and everyone wanted them gutted.
Just wait till Riot finish balancing everything before you start crying. You can't put all the blame on a champ for being good when the meta clearly favors them.
Remember Voli/Sejuani(ok..she was a bit strong)/Amumu/WW etc. during the cinderhulk meta? It was the items that made them strong not the champ. Same goes for vayne. With everyone having a shit ton of hp now she's going to hurt.
Note: Personally idc what happens to Vayne this is my opinion. I hate adc players as well as playing the role. So i'm not biased at all