The idea
I dont really see the point in different exam boards, because some are known to be easier than others. Surely it would reduce the costs for schools ( who have to pay for students to sit the exams) and make it easier for universities to compare candidates.
Why is it important?
At the moment, candidates can't really have their grades directly compared if they took exams from different boards, which doesn't lead to an equal playing field. For example, different exam boards have different proportions of people who recieve different grades; but you can't really expect admissions tutors or HR personnel to look up all this data to give all applicants a fair comparison.