When a few champions tower over the rest, the rest need to brought up. Not the top down.
Whenever Riot wants to make or remake a champion into something fun it's numbers have to be destroyed later on. Yay, we achieved balanced and now the Champion is no fun. Just like most of the other champions.
When a few champions tower over the rest, the rest need to brought up. Not the top being brought down. The reason why is because when champions (over the years) are constantly brought down to everyone else's level it makes the game stale.
Riot is unable to introduce lots of outplay on abilities because other champions can't match it, so newer champions often have very weak stats or a very simple Kit. Players and Riot need to start to be willing to change bigger things about the game than just numbers.