With end of Season Approaching...
Riot are you looking into completely redoing masteries again. The new ones have just been more and more balance problems. Every kit is at a point where masteries make or break kits. The strongest ones literally have reshaped laning so hard. I think the whole Keystone system needs be chalked up as a failure as it cannot be balanced.
The old plain stats were at least not making every champ have insane damage no matter who they are. Seriously, every tweak you did to masteries or interactions completely flipped the meta this season.
At first we had to deal with League of Thunderlords, then it was the problems coming from Fervor of Battle and DFT, then it was Warrior's Bloodlust, and then it was Undying Grasp. I mean really that's half of the keystones that keep bringing up issues and even know its more of everyone has just kind of accepted that they are here.
So are you going to look into once again redoing masteries as IMO this year's set was and still is a failure because they ended up shifting the game way too much for something that is 100% outside of the game.