This idea has been developed and deployed to Canvas
A good instructional design practice is to have a predictable module structure for students to follow throughout a course. This means repeating a similar flow of pages and assignments over multiple sections of a course.
Currently copying requires creating a new module and items for each section, and copying content for each item. By adding a “copy” option when editing a Module, 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.