Rather than only being able to give date/time for when an assignment is due, please add an option for "Next Class."  My classes don't meet every day so it would be much easier to assign homework to be due the next time the class meets rather than having to check the schedule to find the date of the next class.  For example, I have a class that meets on a Friday and homework is assigned that day.  The next two days are the weekend and the class doesn't meet on the following Monday, and finally meets again on the following Tuesday.  Rather than looking up the date of the following Tuesday and then entering that date in the "Due" field, it would be much more convenient to click on a "Next Class" button or pulldown.  Since the class schedule is already in onCampus, the software should be able to compute the date of the next class.