Nexus Blitz Gamemode
So, I think it would be cool to implement another mini-game for Nexus Blitz where it is a Battle Royale, but every champion reverts back to their original released champion. So their original first released abilities/kit and skin before any re-work. (Or just their abilities/kit).
I.E. Sion, The Undead Champion and is old Stun Q Stunning Gaze, Permanent Toggle Health on is E, Etc.