Add find and replace.
For example, if there are 10 quizzes over the course of the semester the instructor might want to change the word quiz to exercise in every instance. For the time being it is necessary to go through and manually change each word. A find and replace option would simplify the process.
I think this speaks to the bigger issue of being able to do more batch editing across the suite (e.g. duplicating assignments more easily, etc.)