Lets talk about nerfing Vayne

There have been a ton of posts in the past month about how strong Vayne is, how she's one of the most picked champions and still has a >50% win rate, how many players are frustrated playing against her, etc.

And we've had the cries for nerfs.

My question with this post is: HOW should we nerf Vayne, if we do?

I haven't seen any post give reasonable suggestions as to how Vayne should be nerfed. Do we want her early game to be weaker? Her late game? Her mid-game spikes to occur later? For me, I don't think her late game should have any difference at all, but her early game needs to be weaker. At the moment Vayne is relatively strong early since most early game ADCs have been weakened. In addition I think one of the frustrating things about Vayne is that she's difficult to punish in lane, especially for skillshot reliant supports.

My suggestion would be something like Tumble: Cooldown 6/5/4/3/2 -> 10/8/6/4/2 So that her early game and early-mid game have less autoattack resets to help her dodge skillshots and can be used less frequently/Vayne actually has to think about when to use her tumble rather than using it whenever she wants, but later in the game there's no difference.

That's just my suggestion, the point of this thread is not to discuss whether she should be nerfed, but how she should be nerfed. So, lets discuss in the replies, shall we?