Old champions game mode?

I have been talking to some people that have been playing league for quite a while now like myself and we agreed that we miss some of the old versions of the reworked champs. Is it possible that they could be reverted in one of the rotating game modes for the people that enjoyed the old champs while not changing the flow of the game for the normal community? Then the people that enjoy the old champions can play that game mode and people that do not can still play normal or ranked. (i have only been playing since season 4 so not since release or anything)