Why was critical strike not made to interact like Ashe's passive with all champs? Rathar than RNG?
This. People have been complaining about RNG factor of Crit forever, but with the last 2 ADC metas (ardent censor, now the recent Crit Meta), it has become even a bigger topic, on top of annoying champs like Tryndamere 
My question is why has it never been reworked on the same scope of
Ashe's passive, where all her Auto's deal a additional % total of her Crit.
Example: If she has 50% crit, all her autos deal 150% of her Attack Damage. RNG problem solved, and Ashe is to this day quite possibly one of the most balanced ADC's out there, with clear strengths and weaknesses... unlike so many others.
Why? Why do we still have this RNG system? Why not make all Crit interact in the same way of her passive and balance it gold and availability wise around said system?
So lets say you have 30% Crit
, and 100 AD. I personally find it more healthier that sayd champ is going to deal a Flat 130 damage with each auto, both I as the opponent or player know the damage im going to deal and can play around it. In 3 attacks, ill have dealt 90 extra damage, total of 390 damage.
Vs
Wondering if one of those 3 attacks will crit, dealing 100 extra damage. No one can play around this. I as the player dont know if im gonna get lucky. The enemy dosent either, and my victory or defeat suddenly circles around a random number. I could get 2 lucky crits and deal 200 extra damage for a total of 500, or none, and deal only 300.
I dont know man, i personally think the flat % increase to attack would be a much healthier system than wondering on luck.