I give Riot a challenge
Have one patch where all you do is buff champs. It seems crazy, but bringing old champs on the same level as newer champs is a great idea. It makes every champ feel viable for a short amount of time. Do this for April 1st and reset it, I don't care. Just make every champ feel a part of something bigger than, oh you counter this with this and this is Op and stuff like that.