there are two groups of ppl this game is balanced around
One is 7 year olds who fucking suck and thats who the shyvanaa and yi buffs are for. The other group are the lcs players.
They dont balance the game for ppl in the middle and I thiink thats whats going to doom the game. A game designed for a few thousand ppl at 2k elo is going to be just as short lived as a game designed for people with 2 second attention spans. I understand the desire to pull new young players and to have a competitive scene, but you need to respect the older ones you already have and those people have a heightened sense of what actually is unfair.
Such as matchmaking which is rigged to give red and blue sides even statistics. Such as 0/7 40 cs fizz who can still quickly kill targets surrounded by allies at 16 minutes when any other champion would be absolutely useless.
Such as champion favoritism 
The same thing that pulls a young kid to some of these champions you favorite and hope will grow your game is also what will pull that kid 2 seconds later to a game like overwatch. Thats not a demographic you should make hard sacrifices to satisfy. As for your other key "demographic". The 30 year old pro's who play your game for a living. Yea those guys dont need you and after 8 years of the game, they dont even want you. Their income would take a hit if they left the game and started playing other ones, but their quality of life could go up since they arent playing the same broken game 10 hrs a day..look at odd one. He pays homage to league, but I dont thiink he plays it as much as you want him to. And as soon as the middle of the road ppl you dont design for stop asking him to play it, he will stop too. So re-evaluate your demographic priorities.