Any degree of game balance as it is is completely impossible because everyone wants to be an ADC or AD melee assassin. They all want to do all the damage, engage in all of the teamfights, get all of the pentakills, and have no solution for anything other than to build up as much damage as possible and engage in a direct slugfest with the enemy without any sense of nuance or strategy. A rabid fucking mongrel has more strategy than the League community.
Nobody goes for objectives, pushes lanes, wards, watches the map, or does anything that doesn't even remotely promise that they'll get all of the pentakills ever. Nobody picks tanks, mages, supports, fighters or even brawlers, and have abandoned all durability, range, magic damage, crowd control, and buffs because they think raw attack damage is all that they'll ever need.
The game will never be balanced because the entire community continues to triple, quadruple, and quintuple down thousands of times over on doing absolutely nothing but the most direct form of damage possible, even going out of their way to screw each other over in order to claim all of the kills. And right now, there's a growing movement to try and petition all of the CROWD CONTROL to get removed!
The entire community imbalanced the game by focusing on one singular element of the game and not only abandoning all the others, but ACTIVELY trying to get them all removed! I've been pointing this out for years, and all I am doing is losing ground on this.