This is so interesting, I have the same question! Dates are not important to me in some of the classes and it looks very unprofessional to have due dates 6 years out.
Would it be possible to but a check box in the Setting Page for each course that would disable the due dates function for that course?
Just a thought.
PS. No, I do not feel comfortable messing with the dbase. Everything works great right now, I don't want to "fix" it.