Dynamic Queue trick?
So I've read a lot about people getting their secondary role way too often, or support on fill way too often, and thought I'd share a way my friend and I have worked around this whole dynamic queue thing so we can get the roles we want, or at least don't mind, almost every time.
Ok so, I personally really enjoy supporting, and they like to adc. But, they don't mind going mid occasionally. So when we queue up, I go Support/Mid, and they go Bot/Support. As an added bonus, since we both queue as Supports, we get slightly shorter wait times. If I get Support, they get Bot, and we're both happy. If I get Mid, then they usually get Support (Since we all know how much Dynamic Queue needs Support) so i just trade roles with them. Then I get Support, they get Mid, and we're both happy. And (this rarely happens but) if I get Mid, they get Bot, and someone else gets Support, I just ask to trade them. So far they've always traded with me, which is great. Otherwise, I can play Mid too. We're all happy.
I don't know how well this would work for other role combos, but it's something to keep in mind I guess? Hopefully this helps at least one person. [slayer-pantheon-thumbs]
EDIT: I should have probably just put the basic "formula" here. Player 1: Role you want/Role you both don't mind Player 2: Role they want/Role you want or some variation of that.