A weapon that lets you pick up and throw your enemy.
Diffrent vehicle types. (EX:vehicles with more powerful weapons and the ability to hold multiple weapons but bad speed, better speed but poor handling and less effective weapons, and an all around/well balanced vehicle).
Power-ups:the level spins for the opponents messing them up.
invisibility (i suspect its already been mentioned)
powerup that either shrinks or enlarges you. shrinking making you less likely to be hit by weapons but can be rolled over by enemies and larger makes you able to roll over enemies, but more likely to be hit.
speaking of that mabye some weapons should be more or less likely to hit. more effective ones hit less
Last edited by randomguy8; Sep 12, 2009 at 08:36 AM.