Assignments are often used as tests (available/unavailable) requiring them to be quickly activated and deactivated so that students can see (or not see) the assignment.  I realize that one can already pre-program this feature, however in the day to day life of a teacher not all cases can be programmed.  This feature, which is already available with the Test and Survey modules, would make life more simple in the classroom and save an extra click.  Sometimes it can take time to download the assignment just to be able to activate/deactivate it. What do you think?