Seriously over 50% of the games I play have a vayne in them. I don't mind that she has no weak point at all during the game and is always strong or the fact that I personally do not like her. It is the fact I am bored out of my mind playing against her for the love of god disable her or something for a week so I can see a Lucian or any other ADC.
Togekiss242 votesShe does have a weak point, actually: Lack of range and a slow start early on.
Playing champs who can outrange or go aggressive against her early (Such as Caitlyn or MF) is recommended to keep her from snowballing.
With that said, compared to other "weak early game" ADCs, she has way too many safety options in her kit and her power spikes are brutal. That's really the only thing I want to see addressed with her.
Necrolips1 votesThat is true honestly. Still though I wouldn't mind just seeing less of her thats all I really want.
PrinceOfStorms1 votesYes, but no matter what she -will- become unstoppable, and she's never irrelevant, unlike other snowball-y ADC's like Draven, because she has that %max true damage. She also has a 2-second CD tumble that gives her stealth during her ult. What if the duration of stealth granted by Final Hour was reduced to the time that Vayne actually spends tumbling (so like 0.25 seconds)? Or what if the cooldown of tumble could not drop below 4 seconds (even with max CDR)?
TekkenPlayer1 votesYou see Vayne every game how about me seeing this cancer 
every game?
Necrolips1 votesI play her every now and then but I hardly ever see her in my games and the last time I did I think she was AP mid.
Rebonack1 votesThe change to Energize stacking was a significant indirect nerf to Vayne.
I'm curious if her strength will pick up when people start running Trinity on her rather than Shiv (Trinity/Cannon/Tumble is a pretty potent opening salvo). But for the time being I would say she's probably fine.