The damage in this game has gone to shit
RIot are you really that stupid? Team fights went from a complex game of mechanical skill to being insta popped the moment anything happens. Not every class of champion needs massive damage why can't you understand that? Tanks don't need high damage. Right now it's ridiculous. They have survivability, to give them damage along side that is mental. Assassins just pop you. Adc can't even be countered if you aren't right on top of them. Magic damage is through the roof.
Tank = little damage, enough to not be dead weight, but not fighter level damage.
Assassin = high damage, but for 1 opponent and bad at dueling. An in and out tactic. That is what assassins are. Not let me just kill an entire team without effort. Kha should not be dueling not for a fucking second, but he can easily kill fighters.
Anyone with range, mostly adc and mages = a medium amount of damage. Range is a power aspect. Very strong and good at playing the keep away game. These guys have become frontliners when they are meant to be behind the tanks in team fights.
Fighters = very high damage, they are mostly squishy, glass canons, who need to get in close. no range and no durability means they need high damage to deal with problems when they can.
Bruisers = are tanky and have damage, but shouldn't be building assassin builds like Jarvan has been for endless patches. He basically one hits you. A medium amount of damage is fight. They literally build black cleaver and can build full tank after that and still be relevant. They don't need the assassin aspects.
These are the main problems. You need to address these issues. Not buff fucking op champions for worlds.
The only time any of this has been addressed was when yasuo and ekko went tank. Yes it caused a lot of problems. I don't see how Jarvan 1 shotting people as an assassin is any different than Tank Yasuo.
based on your class)