This Teacher View would allow an instructor//teacher/etc. to view assignments without meeting their conditional entry requirements.
For example, if a test isn't open until a certain date, a teacher can't try the assignment until they are in that date range. If a Teacher View were available, access to the assignment would be available to the teacher regardless of time.
Second example, if an assignment requires you to pass a previous test, it won't be accessible to the teacher until they pass the previous test. If a Teacher View were available, access to all assignments would always be available to the teacher.