I came back from a month hiatus, so I know nothing about this new system. I played a couple of games and I noticed that this game changed allot.
Like picking weird champions that doesn't even fit to it's role like Darius + Shen bot or Irelia + Lee bot. Then I started realizing that only a handfull of champs really exploit this new rune system. ADC was already dead back in 2k17, but now nobody plays at all and I understand why. It's either way get bursted first by midlaners or you can't kill the tanks. Well either way I wish Riot would let me play in the old rune system again and not with this current broken system.