Our discord bot has a responce to the queue questions:
The point of the player cap is to ease administration and to encourage people to play on multiple servers instead of waiting for the next round to start when they end up dead. A queue defeats the latter point, causing players to sit in a lobby doing nothing for no real reason, as our server is otherwise perfectly capable of 200
We would not be opposed to seeing this feature coded. But it will most likely not be enabled on official servers.