One for all... How about All for one

Hi Lol Community;

I remembered the days of one for all and thought of the idea of doing the opposite all for one. In this game mode you would pick a lane or type of champion and the game will switch around every x minutes. Say you pick the Fighter/Bruiser role. You star with Riven, and later it switches to Darius, and xin and so on. It would be difficult for the builds but Im sure RIto can come up with a balancing idea. Thoughts?