It seems there are some people who want to use WP Pro Quiz as an assessment quiz. Could it be possible to add a new option in the "Quiz Mode" section? Perhaps adding a new category called "Assessment"?
If the quiz maker selects the "Assessment" exam, the following things happen.
1. Enable the "Different points for each answer" by default
2. Disable in the answer section, the message box that says "Correct answer was not selected"
Scores could then tallied up by what the test taker selects on his exam.
I know you get a lot of requests for enhancements. The assessment exam enhancement seems to be very popular.