Nostalgia game mode

I think a great idea would be to add a new gamemode to the rotation, which uses the old summoners rift, the old music, champions before their reworks, etc. i think this would be a great and fun addition to the game. would be so nostalgic to be playing old sivir with that goofy model/animations, and dashing around with fioras ult. it would also show newer players what the game used to be like.