New nostalgia/flashback mode

Alright so practically every person playing league has some champion that they love that got completely reworked. They desperately want the old version, but that would probably never happen. But what if there was a mode that brought them all back for a couple weeks? I highly doubt this would happen because I doubt riot would take the time to bring back all the old models and coding AND update them so that they have proper interactions with the new items and champions. Seriously though I would choose this over any of the past gamemodes like one for all and urf. It would satisfy a lot of people and give new ones a chance to play the champs the never could.