Autofill NEEDS to be optional
Autofill should be a button at the bottom of the screen that gives you the option of turning it on so you can get faster que times & when you can play other roles.
I, for one, don't mind playing other roles. I started at the end of season 4 and I am used to filling in other roles having played a lot of Nami supp and Cho'gath top. The problem comes in when people who don't want to fill suddenly get stuck in a role there not used to and half the time don't even realize auto fill was turned on when it happened.
That player gets frustrated playing a role they don't understand and may not even have good champions for (lets be honest here it's always support), and then their allies get mad at them for playing horribly in an off role on a champion they don't know how to play. They feed off each other and create a toxic environment with everyone on tilt.
I don't get you Riot. We went through all of last season with everyone hating on flex que. You learned from that one that you can't force players to play the game the way you want them to. We finally get solo que, and first thing you do is force auto fill to create a more hostile environment. Can't we just have role selection without trying to cripple it in some way?