I have a course I teach in a different number of sessions each time. Sometimes I break up the same quiz into several pieces to be taken in different sessions. It would be very useful to be able to annotate which quizzes are pieces of other quizzes without adding long descriptors to the quiz title.
It would also be useful to add notes on which quizzes should be done in combination with what other assignments or what level of detail a quiz contains. Students don't need to know if this is the more intricate or the shorter version of the activity. They will only see one or the other. But it is useful to the instructor to know which quiz they are administering.
Right now I just have to add lots of details to the Quiz name. This has started to confuse the students.