Nothing balance wise, but just some tweaks to make the game better(I guess?).
- Switching the shoulder you aim over. Nothing is more annoying than not being able to see around a corner, but the person you know is there can see you.
- The countdown after the game ends on the scoreboard. Get rid of that and move the scoreboard to the lobby between games. Lots of quits happen the second that screen comes up, and if it was the host, you have to sit through a Host Migration after the game is already over. =\