Why are Jinx and Vayne still untouched?

How does Jinx's rocket being able to hit (and crit) an infinite number of targets with a 10% bonus damage and 175 range modifier make any sense? First of all, it should not be able to crit secondary targets and tbh it should not be able to do full damage to them either. Look at Kayle. She doesn't do 110% (over 260% with a crit) of her damage to every target. She's strong with sated, but pretending that item didn't exist, she's a really well balanced champion. The rest of her kit gives Jinx exactly what she needs to thrive, which is why she has been effective in every meta since her release. She has a powerful long range slow/poke, a great tool for trapping/disengaging, and an aoe execute that when played correctly can simply be used to proc her passive when she wants.

Now Vayne. Basically, she's strong for the same reasons Jinx is. Her kit is so perfectly tailored to an ADC of her type that her "early weakness" simply doesn't exist. Enough mobility and disengage to survive laning, such monstrous raw stats and steroids that she becomes unstoppable late game.

Honestly I have no problem with either of these champions, as I am usually someone like Jax or Vladamir that has no trouble whatsoever dealing with any ADC, but I'm tired of seeing them in every game. When have enough utility and steroids to be a hypercarry at every point of the game, why bother using bullies like or ?

Make their early game "weakness" actually be weak or take away from their late game powerspike. Other champions like and have a heavy early game cost to pay for their strong lategame and that's the way it should be.

The most obvious gripe I have with Jinx is the fact that she can deal full, improved damage and even crit to multiple targets. 1) she should not be able to crit secondary targets at all. 2) The bonus range and aoe should be enough, she doesn't need 10% bonus damage.

Vayne needs a change to 1 of her 3 basic abilities. Having a low cooldown tumble that keeps her safe from wombo combo engages like Thresh's hook combined with condemn which gives her massive kill pressure and disengage means you can't do anything to prevent her lategame powerspike. If the 2 above abilities won't be changed, her silver bolts definitely need to be changed to either deal % bonus health damage, or remove the flat damage.