Game mode playing old champions from first release and old maps (Zilean event?!)

Riot has been improving the game constantly throughout the years and doing visual upgrades on many champions and reworks. Whenever I see each champion that has had visual upgrades, I look back and think about how they looked like 7 years ago or the time they were first released. It would be nice to have a game mode where we have the old maps and playing each champion the way they were like visually and with the original abilities. It would be great going back in time and enjoying the game how it used to be. Maybe if Riot decides to have a visual upgrade for Zilean , maybe we can also have an event that week where we have a game mode "Going back in time" with this idea. Thanks Riot for making an amazing game and always growing.