This is not a new idea (see below). However, since many of the responses appear to suggest creating a Feature Idea... I have tried to title this so that it includes words that will get picked up multiple searched. Interestingly, when I pasted my title, I saw a message indicating there were 'no similar ideas'. My 'idea' is, obviously, to provide an option that lets instructors 'Keep Highest X Scores' when assigning rules to an Assignment Group. The 'ignore lowest' option does not function the same a 'keep highest' would in relation to maintining an accurate running total of accumulated points in the Gradebook. Below are a few links to others who have asked about this. My personal reasoning is presented in "Student Gradebook Issues With 'Ignore Lowest Scores' in Assignment Group.
Tonight I watched Jason Sparks presentation InstCon16 | Quizzes.Next: Modern Quizzing in Canvas - YouTube
It was a great presentation. It seems lots of excellent changes are coming to Quizzes (soon?). I was clapping even when the audience wasn't. The one thing I didn't see (that I very much was hoping to) is this one here. Hopefully it is included, and was just not specifically addressed in the presentation. If someone happens to know if that option will be coming with Quizzes.Next, I would love to hear from you. Thank you.