Riot, I know you hate melee champs...
But why is Vayne allowed to exist in her current state? You get her any hard engage or any decent peel and she just stomps face for the win. She counters tanks (health shred and hella mobility), she counters assassins- the guys who are supposed to be able to stop ADCs, yeah them- with her stealth every two seconds and condemn to prevent anyone ever jumping on her, and her kiting ability makes it impossible for any melee champ except maybe Jax to do jack shit about her.
I just don't understand why such a safe champion (cry me a river about your 550 range) is allowed to deal such ridiculous damage (even for Riot's special pet class, the ADC). And talking about an ADC's relatively weak early game is completely pointless when the support is really the one you need to worry about in lane- Thresh Vayne will stomp Draven Heimerdinger any day (though honestly, with so many supports that complement Vayne excellently I don't understand this particular argument in the slightest).