Potential new game mode?

I love playing ARAM and I'm sure a lot of other people do as well, but I feel like if you pulled certain aspects of ARAM and mixed them with summoners rift you could have an incredible game type.

Assign each individual a different role (top, mid, etc) and give them a random champion that typically plays that role

I feel like this could be incredibly fun for people who enjoy the randomness of ARAM but the structure of SR. Lemme know what you guys think!