Positional ranks make being autofilled feel like a complete waste of time

Just wanted to squeeze in a ranked game or two before I need to head to class but I get autofilled and I realized how much of a time waster autofill is now with positional ranks. I mean, whether you win or lose, it's LP for a role that you don't care about and the LP gain or loss is only a minor splash into your main role(s). So when I get autofilled, I don't really care much about the game; I just want it to be over with so I can get LP in the role I really care about.