Alright, so firstly, I'm well aware that ranked servers exist. That isn't where this is going. I recently got Platinum Tier and did so mostly through the ranked servers that exist, the issue is now that my elo is >1631 I can no longer play in those servers so my suggestion is introducing more ranked servers that have different elo cutoffs so like a server for 0-1631, server for Gold tier - elo needed for diamond tier and then a server for platinum tier(1631) - 2000 for platinum tier and diamond tier.

No one ever does matchmake and I see way more people in the ranked servers and I'm assuming its to grind for platinum and then die and come back when they fall out of platinum or matchmake to avoid decay. With this I believe you'll see way more participation throughout the entirety of this season and by restricting higher elos with one another its more benefical than matchmaking and getting some random person who's qualifying and can destroy elo in any kind of fuck up.

Hope this makes sense, kind of rushed it if you have any questions I'll answer to clarify anything I wasn't clear on.