A customer asked if the students attempt could be stopped and automatically submitted after the time limit has expired?
They find it a little odd that the attempt can hang in limbo until the student clicks on the submit button, even though no further activity can be made. Also it means that the listed Duration extends well past 1 hour, making the Duration field not useful for analytics on student data.
One difficulty with this would be that we would also need some way of notifying the students that this has occurred, and to tell them how to obtain their grades and feedback.
This should be a sub-option fo the existing "Time Limit" property under "General Properties".