I would like to see a percentage of games won vs lost when autofilled. I think it would be a usefull statistic for players to brush their skills in roles they get autofilled the most (support).
Also, I want to see how many games I lost when I got autofilled, vs when I get my desired role. Becase it seems whenever I get autofilled there are players in my chosen roles performing badly. Maybe take that into consideration when this system is being redone, to favour champions exceling in a role to get that role.