New Game mode Idea

How about a game mode that lets us go back to some of the old Champs, not sure if this would be possible. However a game mode that lets us play champs the way they were before their Rework.

Old Poppy, Soraka, WW, Yorick. The list should be a bit long at this point. It might not be balanced at all but I think it could be a good fun time for some of the people who have been playing for years.