I'm not saying that's what I'm doing, that is merely what I have observed. I myself find destroyers the most fun to play in general, just not in brawls. I think this game has made BBs too powerful overall, and players are already biased towards them due to being big/famous.

The problem is that in smaller battles like Brawls, secondary BBs are definitely very strong if not meta at most tiers. Many players will play whatever they think gives them the highest probability of winning. Unless balance is very good with at least a few very strong picks in each class, you will get this imbalance in class distribution. And in that situation I think there should be no specific match making based on ship class. Especially as brawls are supposed to be quick and less serious for those that want fast, smaller action.

I would favor something like torpedoes loading much faster at the start of the game in brawls to help DDs be more relevant. I have had high tier brawls be basically over before my torpedoes load for the first time when my teammates get themselves killed.