Something that would help balancing the game

When you think at the complexity of LoL as a game you really are impressed at the work behind it, so your toxicity goes off just thinking to all the work by people trying to constant balancing champions, champions' kits, summoner spells, items and their effects, runes, masteries, roles, map, and all the rest. Wouldn't it be easier to just delete some useless (they're useful to be stronger, but let's be real, they're just additions to something already complicated) features? Do we really need runes? Free basic statistics that we add, and that costs trillions of IP wasted like that. Do we really need masteries? I mean it's cool to experiment infinite combinations on champions, but really everyone just uses the one suggested or the most common or the strongest, so that is just become boring and masteries don't help in balancing the game. And like that, other of that stuffs.

I feel like the game would lose something, I admit it, but at least would be more fair and more balanced.