I'm sure the priorities are bug fixes and generally smoothing out the game experience, but these are some ideas I think would be easy to do to make the game experience even more immersive. If any of these are already in the works, obviously disregard.
-American female security faces and voices.
-More variety of voice options for security forces.
-I'd LOVE to see voices be purchasable with leveling up points. Have voices of soldiers who sound more calm and collected require more points, so the longer you play and the more experience you have, the more experienced your character sounds.
I know this probably won't happen but adding perks that can be acquired and equipped as you level.
Especially a faster reload? The reloads in this game are atrocious. I've instructed teenage girls who after a day of training and practice pulled off a tactical reload faster than the snails in this game.
If you want to get REALLY detailed, you could make the reload speed slower while suppressed, or slower after sprinting, and faster when standing still and not under fire.