She shouldn't become relevant just because she hits a certain point in the game. As soon as she gets 1 or 2 items, no matter how far behind she is, she will clean house.
Either make her significant all the time and only that significant throughout, or make her be insignificant when she is that far behind.
ScissorsNstuff3 votes"vayne should not do the adc thing"
doiminat0r36001 votesVayne shouldn't be the only ADC that comes back into relevancy just because she has items. Other ADCs don't come back after being 1/9 after they get 2-3 items.
Big Lincoln1 votesyeah they do 
Its All Skillzz2 votesthis post is literally stupid, by this logic no champion who hits a power spike after a certain finished item should be able to do anything.
PermabannedGaren2 votesVayne's two item spike isn't even that good after her nerfs lol. And this thread is ridiculous. Vayne scales heavily with items. At a certain point, no matter how behind she was, if she gets those items she will become a threat. This is the case for any late game carry.
Riven Jungles1 votesyou know that it actually takes very good positioning and timing to do what she does when you're wondering why everyone is dropping like flys when she goes bug zapper mode with her ult and tumbling? it's the teams job to respect that vayne's capabilities and to plot & focus her better. we've all seen it.
Shoutout to Pond
BluePolarizer1 votesProtip: when anyone gets 6 slotted, they have to be respected. A 6 slotted tank Nautilus will still melt ADCs 1v1. 
doiminat0r36001 votesWhat do you do if you're support naut??? CC and hope for team?? And this is vayne we are talking about. The one that is built to shred tanks, regardless of how behind she is.
BluePolarizer1 votessell items and buy damage/tank if you have that much money. Support just means you get less money; when you already have 6 items, the designation "support" is meaningless. And yes, guess what - if Vayne gets money, she will do a fuck ton of damage no matter if she is 10-0 or 0-10.
Hige1 votesO.o but this is true for every adc ._.