If it was about my not using the sound pack, it's just a matter of comfort. I'm already tuned to the sound of my own engines, the sound of my own gear, the sound of my own bullet hits, bomb blasts, and so forth.
I'm already "used to" the sounds I have, and in a combat situation that's very helpful. Please, take it as no insult to Twinboom's soundpack that I'm not going to use it.