About autofill...
...great feature! As somebody who mostly plays Jungle and Support I think it is a great idea. Everyone should experience playing "undesirable" roles so they understand the game better. And the few times I do go mid or top I shouldn't have an hour wait because everyone thinks they are the main character of an anime and need to solo carry the world from their personal 'me' space lane. Good job, I think this will help the game a lot. And I also like that you didn't take it too far, removing it from ranked and making recently autofilled players exempt is a nice balancing act.
GJ Rito.