Not sure if this has been posted yet, but I thought you'd like to see this (about matchmaking)
Tl;dr: They'll soon be adding a new option to let PBE players exclude one role from being played. Not sure if this will be much of a fix, but it's a good start seeing as Riot's been on about Autofill. We'll finally be free of those people complaining about how they don't want to Support but are forced to, or forced Junglers, or at Mid, Bot, or Top. What do you all think about this? I think it's something of an improvement, but I want your thoughts people :)
