pre-work option

It's a sad sight to see your beloved favorite champion get a rework (that you might not like). Well, what if there was an option to select (In champ select screen, maybe near summoner spells button) the re-work, or old form of the champion. I'm personally a casual player who wouldn't mind if this was an option in Normals if anything. But I would like to have the option to play old , old old and old . not having access to the old pre rework champions only makes me a bit sad that i wont be able to play them ever again.