people dodging queues when autofilled into support

is making autofill give some people support 50% of the time. logically speaking there should not be more than a 20% chance of getting autofilled as support.

so i think the best solution would be to make it so if you get autofilled as support you get autofilled as support guaranteed until you play the game as support, even if you dodge, the next game you queue up for you get support until you played your support game.