User blog comment:Freedfg/Is vayne TOO versatile?/@comment-10779726-20130720011739

Vayne indeed has a very good kit, that much is accepted by the community at large, she also has very evident weaknesses that allow her to remain un-nerfed. I am certainly not a pro and won't pretend to be.

Vayne's Kit

She has no reliable escape other than flash, a Tumble towards your turret is not going to help you, espcially on a CD that doesn't start until you auto something after using it.

Her ult allows her to chase down targets and kill them, however, mostly any ADC can poke Vayne down and reliably kill her.

Base States/Laning Phase

She is extremely squishy at all points of the game even considering she's an ADC, besides Ezreal she has the lowest base HP of all ADC's and Ezreal has a reliable escape in his E.

Her laning phase it pitiful. She has no built in wave clear and is terrible at early dueling, this not even including the fact that she has no long range poke built in.

Playstyle

Vayne requires a high skill cap to play, sure you can Condemn a champion away or into a wall, but that isn't going to stop ANY bruiser in the first place considering that most of them are designed to gap close and smash your face in before you can do anything.

Most telling, Vayne absolutely DEPENDS ON HER TEAM to make plays. Until she reaches late game where she is that monster threat to your team, she isn't actually that useful with very niche stuns.