A Solution to Auto-Fill: Rank Your Roles
I saw this on a different thread somewhere: Instead of just putting your top two, put all 5. For me, I'd have (first 3 changing based on what I want to play) 1.Top 2.Support 3.Mid 4.Jungle 5.ADC
If you're going to autofill me just put me in support not ADC or Jungle for the love of God. I'm bad at Jungle, but I can survive. As ADC though, well I already lost.