Remove true damage from the ADC class
There is no reason as to why ADCs should have true damage. Their range and kiting is enough to do the job, adding true damage is only there for hindrance and annoyance that becomes borderline OP.
True damage should not even be in a regular kit unless it's in ultimate or suicide passive (Kog'Maw)
Vayne's passive of having true damage? Load of bullshit on a ADC/Assassin since it won't matter if the person stacks HP since that can be melted in an instant in the hands of an assassin that has fucking range.
Corki's basic attack that deals true damage that scales with 10% of his physical damage? Seriously, on an ADC again? Why not put this on a tank or fighter, you know, someone that has to get up close and personal and lacks the mobility? It's a load of horse shit for someone with range to have that.
That doesn't include Twitch cause at least his true damage might as well be a tickle compared to some of these other true damagers (not to mention you've been butchering this dude in the last year).
But no Riot (and it's retarded community) you want this OP stat in the game as a casual on range fighters. You don't want it to be balanced. How about for once you do everyone a solid and put at least 200 health on thornmail? Considering you're enjoying making things unbalanced and "fun" I think most tanks would find it "fun" if thornmail had a health upgrade with it.
Aww, but noooo, the ADCs would throw another bloody fit about it as they always do until they get their compensation.
How about this.
Replace Vayne's true damage and Corki's true damage with magic damage. You still have your damage without the attribute of being unbalanced.
"But then they can actually build defenses against my damage."
That's the bloody point.