I just don't like the idea of keystone being a bigger role in the next season.

Remember Thunder lord and Fevor? When the keystone came out practically everyone built thunder lord even ADC would go for thunder lord over fevor and when fevor and certain other keystone got buff everyone started to move to the buffed keystone.Still remember no one even building death fire unless they have a certain burn like Brand/Malz/Swain.

Keystone looks cool and are cool but I think mastery should play a little role and keystone medium roles so other class type doesn't get out match because they obviously have the better mastery path, in the end what matter is how skill the player is with the champion rather then the game giving a big advantage for players over certain type of keystone.