A few minor tweaks that I think would be helpful:
1. In the game lobby, color-code the voice chat indicators (light blue/light red: your team; white: everyone).
2. Disable the "Exit" button for a couple seconds after people hit "Back" out of another screen. I can't count the number of times I've accidentally left a lobby right after trying to change a loadout by inadvertently double-clicking or hitting back too many times.
Thanks