As an EU player i notice that the later into the night I play I am more likely to have Americans in the game, and that latency in these games is ALOT higher. I understand that you’re probably using metrics like queue time, connection, skill but to me this makes no sense. It might work for -Yoink- players but in platinum and diamond if your at a 100+ms ping disadvantage its -Yoinking!- game over.
Ultimately this is where all consoles fall, in my opinion i should never be put into a game with higher than 30-50ms of ping. Please at least make an option to priorities connection or region lock us!