A good instructional design practice is to have a predictable module structure for students to follow throughout a course. Assignments often have consistent options and text (ie: honor code statements) throughout a course.
Currently copying requires creating a new assignment, and copying content for each item. By adding a “copy” option to the options gear, the effort to build a course will be greatly reduced. If this triggered a dialogue to state how many copies to make, it would be very simple to quickly build out a course structure.
Please help to flesh out this idea by discussing your particular use case in the comments.
Edit: taking quizzes out of this request -- please vote and comment at Duplicate Quizzes