New Game Mode

I was thinking about some of the old champs before their reworks, and I thought it would be a cool game mode if you could play as all the champs before their reworks. Personally, I would love something like this as I've been playing league for a long time and sometimes it sucks to see your main get reworked. It would be cool if you guys at Riot could let me know if this would be possible or not, Thanks.