Idea: Having the ability to have critical questions "trump" required score in a course.
Use case: You have a course required score of 80%, user receives 80% but the last question is "do you understand" and they answer "no". They shouldn't pass the quiz even though they did receive an 80%.
I assume from your question that you are looking to build this natively in Bridge, is that right? If you are doing it in SCORM, that is really easy to weight the questions.
So, maybe what Bridge should implement that would be easy for them is to allow question weighting.