Doesn't Autofill contradict role selection?
Just a thought about the autofill system.
Riot got rid of the old champ select because people wanted to be able to main a role or two. So the first thing they do is create an autofill system which randomly puts you in a role you don't practice with much or like. How is this any different than the previous system where the last person picking on your team gets stuck in whatever role is left over?