Pull your head out of your corn hole and balance this accursed game
You fools need to think more on balance than what's cool, like a 13 year old who wants to be game designer. Here's an idea take more than 2 weeks of brain storming and actual look into what the problems are with the entire game not only popular champs. Example: Yasuo has Double crit, a shield, armor pen, and extreme mobility. While someone like Mordekaiser has no CC, no mobility, poor tank capability, poor mage qualities, and has the range of a toothpick. Now the best way to fix either of these champs is to take your philosophy of "Identity" and throw that concept out of the window. You use it as a excuse not to remove the 13 year old ideas you have. Example: you use "Identity" to keep Ryze's combos because of the original design and you refuse to replace how he plays because his "Identity" of combo mage and it has never worked. He either is super powerful or 6 feet under. So if a champion's gameplay doesn't work, don't try and force it to, either find a different way or remove it. Now I know you don't like the idea of removing the champ from the game, but if you want a balanced game it will be required. Or the other option is to halt releasing new champions and fix all the ones you have released. And I know that won't happen because it would lessen your cash flow.
You can't keep up this filp flopping on numbers and ignoring unpopular champions, either take more time or start removing things.