Want to speed up queue times?
Play a support - unlock another support at random.
Support skin discounts per game.
BE daily bonuses for completing 
Play a support - unlock another support at random.
Support skin discounts per game.
BE daily bonuses for completing 
a lot of champs can be played "support" so not sure what is "support skin"
I am a support main and I already have less than 30 seconds queue time and auto-fill protection. There's no need to give anymore incentive.