Unfortunately I don't think they will take notice unless someone gets to ask these things directly during fanfest or similar. Might need a community figure or two to rally out people, since it feels that no matter if you contact them through support, send email or try to interact with the JP forums, it will most likely either be disregarded or at most met with "thanks for bringing this to our attention, we will consider stuff" and just left hanging.

EU really is getting the short end of the stick due smaller active Ranked playerbase, I'm not sure how happy our NA or JP friends are with the status quo but they are probably busy playing matches throughout the season.

It's just sad state of things, because despite its issues CC is fun to play and spamming Casual just tends to end up in awful one sided matches one way or anoher when highest ranks get mixed in.