Put '+add new assignment' button on the schedule editing page
I had a professor using announcements and schedule in such a way that most of the students had a hard time following it. You should make a button on the "edit schedule" page to add assignments, maybe ones that appear as you scroll over dates or a dropdown box that allows you to choose in one click wether to make a lecture subject, an assignment, etc. That way students don't have to always be guessing, or shifting through all the details on the scheduling page. Of course, this is not a problem for teachers who are used to Learning suite. But New professors have better things to do than to figure out how to use learning suite effectively.