Champion Stories in Game

Wouldn't it be cool if every once in a while there was a gameplay using related champs, and depending on the champ you play you had your own particular goal?

For example: In Warwick's old story he had to hunt down Soraka in order to stabilize his mind, or in the Freljord how everyone wants to be in charge End Game: Warwick kills Soraka = Less crazy/maybe even human form :: Lissandra and Ash already have their own in-game easter eggs, but let's include Syndra too <3

IDK not a complete idea, you guys help me build on it if you think it sounds cool!

(P.S. I thought the schematic was cool, feel free to edit!)