Ranked Solo Q (dynamic fix)

i have a suggestion so that ranked Q can have shorter Q times and more role diversity. I think that players should choose their primary roles and than automatically have fill for secondary. As it stands right now entire generations of new players dont ever play support. The ranked solo Q is suffocated with no support players. Atleast this way Q times drop and player diversity increases it is like a mix of what we have now and what we had before.