New LoL gamemode

Wouldn't it be cool if riot added a new gamemode? And i'm not talking about urf like everyone does. I'm talking about letting us pick old champions before the rework like the old sion or ryze,taric. I think that would be really nice, because we could show these new players what the old league looked like. It would mean so much to me,and please if you agree answer to my post.

                                                          Sincerely, Enderman305