Hi Pierre:
Good ideas. Curriculum should be based on institutional approved student learning oucomes (SLO's) for each course. The couse ouline and syllabus is then derived from this foundation. If the instructor avoids straying from the SLO's, the appropriate and essential material for that course is assured to be covered. If time and resources allow, additional material may be added, but the minimum SLO's need to be met.
That said, your good point about the human delivery of the essential course content is what makes a course memorable to students.
Regards, Barry