Old lol style game mode

Hey Riot, I know that a lot of champions and/or items got reworked and removed for being kinda overpowered or anti-fun, but could we , for once a year or so, have some of the old contents of League back as a rotating game mode? I think there would be TONS of people who would drool at the thought of playing some old Fiora once in a while, or getting a Deathfire Grasp for the first time in years. Just an idea, would be really cool though imo ^^.