I should be able to have sound effects without listening to the music. I like listening to my own music, or better yet, my teammates' voices. I should be able to turn off the crowd and announcer. Please separate the volume control into crowd/announcer/sound effect/music sliders, so I can listen to the game without listening to absolutely everything in there. The in-game music gets old. It's good, but I can't listen to it for hours and hours and hours.
Already confirmed they're going to have separate sliders for sfx/music. Don't expect an option to turn off the announcer, since it's been requested on the 360 version but never mentioned by the devs as something they're looking at.