it is very important for the ship to ship communication to be serious. When a ship is taking damage I'd expect to hear a distressed voice. When kicking the crap out of enemy they should be focused and content. Doing this I find the gamer is drawn in more so.

I don't like games where voice over between ships is like listening to a bunch of kids trying to be funny. Cataclysm voice overs are horrendous. Homeworlds voice over = WIN