New Game Mode Idea

I was thinking about new game modes that Riot could come up with when this one crossed my mind and could be fun for people and be a sort of trust building game mode. I call it "Two for One" and it would take two summoners and let's them play one champion, one controlling the movement, and the other controlling abilities. The champion select would work similarly to One for All where it's a voting to see which champion is to be played. It could be a "1v1" mode, where it's one champion against another champion but it's 2 people against another 2 people.