You can't have True Balance in this game.
I've been with league of legends since it was on CD. (Black Ali ftw woot)
I understand when it comes to the champions some need buff others need nerfs and then we get people in general who ask that all champions be equal in strength. Which is literally NOT possible, think about it. Think about it, If you are one of those players that play only Blind Pick. I call them them Lee players, cause they don't see hardships of ranks. You can't complain about a champion being broken or op that made you lose the game cause you could of selected the champion yourself. (Sucks but it's true, either you just didn't want to learn the champion or wanted to find something to complain about.)
Then you get the people in rank who complain about X Champion being Over powered because someone found a way to play him/her a new way or new build. Example: When Lulu was found to be hyper annoying as a mid back in the day more then a support. (Old school players will remember the AP Yi days....we all remember those dark days..)..Or to the new players who never saw those days...Graves Jungle.
Every champion has a key component that makes him or her unique. At the same time, unless you are playing a mirror match there is NO way to make two champions perfectly balanced. Even if you built the exact same items on two champions that doesn't mean they should be ended in a draw.
Certain champs are going to be stronger than others and until you learn how to play against them o-o.....ffs stop asking for nerfs...