Diversity in Gameplay.
With all that has been added, changed and removed recently, we are stuck with a "Meta" group of champions. The old Runes/Masteries system was good, it allowed for creative building and playstyles. With the current rune system, we have a set number of runes (1 Keystone, 5 Runes) which only allows for certain combinations on each champion. If there was a way to combine those two systems, It would allow for many different build paths for each champion.
Although I wasn't around for when masteries were in play, I have a general idea of how they worked.
Right now, Riot is trying to take the old masteries and put them into items or the rune system, while it does work, the old way was better. Riot could have kept the old system and added these runes to it, or changed/tweaked them.
Right now, there are champions who have to play around the new system, and those who struggle to (Lookin' at you, Rumble). What I'm suggesting is that we go back to the old system wait for it and add the current keystones and runes to that, or change them to fit the scene.
Maybe its a good idea, maybe I'm just a bronze 2 kid.
Thoughts anyone?