This response may be rather late, but there are many benefits to cross listing a course. As you mentioned, cross listing funnels students from two or more sections into a single Canvas course so the faculty only needs to keep one site current. This helps create a consistent learning experience across sections, but it does allow the faculty to use settings as needed to:
- Assign assignments or set due dates by section.
- Filter the gradebook by section.
- Send announcements by section.
- Set up groups or peer reviews by section.
It is a great option for faculty teaching multiple sections of the same course.