It is about the health of the game, it is an MMO, you need players, more players means more content, what is the point for the Devs to create 2 new campaigns lets say if there are not enough players to fill all queues? It is bad as it is.
Another aspect is being locked out of the full game because you like to play Soviets as an example, you will only get to see the same maps, over and over again, no diversity and in the current state maybe even the same players and same 5 bots.
I want for us to find a way to bring more and more players rather than turn Enlisted into an elitist/exclusive game for people that want a Singleplayer Historical FPS but in a MMO environment.