Lore-Related Game Mode!
With the disappearance of the JoJ and growing dependence on fan-fictions rather than actual Riot-made Lore, I think we should all get behind the idea of Lore-Related game modes. What does this imply? In short, I'm talking about allowing us to actually participate in what the Lore says the League of Legends was created for: resolving conflicts!
Every few weeks Riot releases a Conflict Game mode featuring two sides of a conflict (be it Noxus v. Demacia, Bandle City v. Bilgewater, Piltover v. Zaun, or any mix depending on the conflict). The game mode would operate as a normal 5v5, 3v3, or Dominion match with the exception each team can only use champions from their representative City-State.
The results of each match are recorded and whichever side of the conflict has the most victories at the end of the event wins that conflict. Lore is written accordingly. Its an inclusive way of creating new lore!