As a musician I know that music and sound play an extremely large role in the immersion of a game or movie. However, the menu theme is just a single note held out most of the time, with some variations and such occasionally. Then during the pregame screen, it's always the same; just a snare drum. Then when you're in game, it's the same thing; just a snare drum (specifically in duels and brawls).
Not trying to be a jerk, but it gets old really fast. It would be nice to have some ACTUAL music in this game, not just some over-hyped snare drum count off. Please consider adding more music to the menus and multiplayer games as a post-release update, I think it would make the game seem a lot more intense to have some more music. I just thought about Battlefield 1 and how it's main menu has multiple themes, and the variety is very pleasing.
As a suggestion and keeping with the theme of an orchestra for the menu theme rather than electronic or wind instruments, there are tons of roads you can take. You can go for an intense "middle of the battle" orchestral idea or a tense "calm before the battle" type of deal.
This might just be me, but I would be extremely happy to hear more out of this game. The sound design for combat is incredible, and I'm certain you guys have songwriters who could whip up something more for this in no time. And by no time I mean like a few months.