Hello, sometimes if you find the match maker is abnormal that may because the enemy come in a team. For team member they can choose what they want and we can't control. If you think it a problem, please save a screenshot for us to check. For now our match maker is +/2 tiers each game. Best regards.
Thanks for your suggestion. We have submitted it to our related department. Hope developers love and adopt your ideas. Enjoy the game!:)S