I'm all in for a hidden rating system, especially based on the highest rating of the party. I worry this would either divide the queue up to the point where matches won't pop if a specific rating was not met. Inversely, not enough players are playing meaning everyone's lumped into the same que anyways. (I wouldn't have to worry if the players had some frontline statistics above what is shown in the Lodestone).
You are correct, the effectiveness of the DRK combo meta is the weakest links on the opposing teams. I die a little when I see 4+ players 100%-0% off the alliance list over a single tick. Obviously running into the meta is unavoidable sometimes, we don't choose to get pincered by our enemies afterall.
As a region we can't agree on what the best course of action would be, and we have been talking about it for months now lmao. This leads me to think educating teammates is the best way to go; and tempering expectations for those laissez faire teammates.
Sitting back and thinking about it, there honestly might not be anything to balance. It's not like FL hasn't had a meta in the past. Maybe it should be left as-is and the player base will eventually learn. Afterall, we figured out how to stop classes from getting height based kill, how to stop PLDs from pairing to cap points, to now stopping DRGs with a plethora of different CC.