It takes a lot of time to set up a 16 week semester so that sections automatically open based on date and completion information. I have found that using an or condition with a date and a checklist completion to be very satisfactory. The trouble is once set up, it cannot be transferred to a new course without deleting that course's section header label and text content. The ability to copy the sequencing and flow conditions from one course to another would save me hours per course.
Currently checklists can be restored and can maintain their expected date of completion data. The section header completion data is lost when restored. Only the label and text content from the backed up course remains.