What 'Marcho' suggested earlier on in the thread, with weapon and armor customisation. To try and make a more unique 'killing machine' on the battlefield. Have the statistics and awards from each match you play contribute to something, such as better armor, skills and accuracy.
Possibly even to try and make the game more strategic based, rather than everyone running head on to each other. Have an element of destructable terrain that can contribute to better strategic positioning.
Allow the players to have a larger and more furious combat zone, with the controller of such large ships as the star destroyer. Of course when you crash a ship into another they will both explode not just the one that did the attack. To prevent people from constantly doing this to try to win a match, have more points deducted from your side than just the amount of players killed. For example crashing a star destroyer = -20 points.