I suggest giving the players who finish a multi-player round ALL of the experience points they deserve, instead of penalizing THEM for someone else quitting.
Perhaps the fairest way would be to add a category of experience points called "Watch the Ball Experience" to go along with "Hit the Ball Experience". Give us a point for every minute we wasted waiting for the quitter to make his shots.
Also, if I played in a 4-player game, and I completed the game, I should get points for completing a 4-player game, not points for a 1-player game!
Thanks.