Minion Massacre Mode.
If you are like me, you hate the minions from Despicable Me and you are tired of seeing them on every fucking corner of the planet. They are a grim reminder that the public is stupid and easily amused.
So I propose that we have a mode where there are no enemy champions, but super powered minions (from the movie) that replace normal laning minions. They run at you with 750 Movement Speed and try to swarm you to death. They also have unpredictable AI that allows them to hop walls, gank, and steal objectives such as dragon, baron, or vilemaw depending on the map.