I would like to see an additional grading option for Multiple Answer quiz questions in which the penalty points deducted for each incorrect answer = the total points for the question divided by the number of INCORRECT answers, rather than the number of correct answers.

This way overly harsh penalties won't be imposed in questions having more incorrect answer choices than correct ones, but the question score will still be zero if ALL answers are selected in an attempt to game the question.  Right now, the penalty point deduction calculation can harshly reduce such a question's score to zero even if all correct answers are chosen + just some incorrect answers. 

This option should address concerns that many of my colleagues, other users, and students have raised about confusion and dissatisfaction with grading of such questions.  This option should be programmable using the same kind of algorithm as is presently used in the calculation of penalty points based on the number of correct answers.