We would like a way for an administrator to be able to view the site as different roles without having to create other test users. i.e. as an instructor sets up their course, it would be useful for them to be able to see what the course will look like from a student perspective without having to log in as a student. The same goes for an administrator such as myself, it would be useful to be able to view the site as a staff member or a financial admin or a student, etc so that I can insure they are seeing what I want them to see.
Without this functionality, it can be difficult to know what you are seeing because of what roles and therefore what someone with a different role will see and won't see.