There are something will brother teachers when they want to give some practice quizzes for students:
1. Every quiz will be a grade item in grade book.
Take one teacher of my moodle site for example, a course the teacher teaches has 115 grade items in a course, and 67 of those are quizzes, not every quiz need to be a grade item, when he open the grade book, there a so many information that is not required. If quiz has an option can mark this quiz as practice and not be included in grade book, it would be great. (Take assignment for example, there's a "grade type" option, no grade item will create if the option is set to none.)
2. Student's can't review the quiz if s/he has not take this quiz.
Sometimes, teacher will use quiz as an assignment, they expect to grade student if they hand in in time, but teacher expect that students can do the quiz after time's up for practice. But now the quiz activity will not allow a student to review the quiz if s/he did not do the quiz in time, so teacher needs to duplicate the quiz, set "Attempts allowed" to unlimited and set "Percentage" to zero for student.
If quiz has an option can mark this quiz can be review or practice after time's up, and there's a practice button for student, that would be much convenience!
It would be very convenience if these feature can be implemented!