Hide and Seek mode.

With dominion being removed from the game, hide and seek has pretty much become next to impossible. This isn't very likely to happen, but what if riot created a map with rules specific to hide and seek. Like, hiders can't do damage to seekers but can cc them, hiders get extended vision in the fog of war, seekers get a ward when they kill a hider to put at hiding spots, ect. And have a massive circular area with a lot of bushes as a new type of map. Again, unlikely, but we can all dream.