I would be extremely disappointed if it had been taken out. I know not everybody likes the songs currently in, but they just FIT LIKE A GLOVE. They also evoke the movies they are from, making it even more awesome.
Also, I am not sure you can actually make battle music. At least, not the way CoH does it. In vCoH, the faction´s music fluctuates according to the situation, speeding up and becoming louder during combat, while being tense and threatening the rest of the time. I believe that is owed to a specific engine that I´m not sure modders know how to handle.