But they haven't done that, and I suspect the reason is because the Scottish Highers were a bit of an after thought. Furthermore, if my memory serves me correctly, the Scottish requirements went up from the previous year, so BBBB is actually after a revision upwards.
That depends how you look at it. This years were four Highers at BBBB which is 260 UCAS points, whereas last years were five Highers at BBBCC which is 295 points, so you could argue it was a reduction in requirements even though it would have made me ineligible.
It just really goes to show how arbitrary the minimum requirements are in a way, never minding the debate about equivalency of Scottish, Irish and England and Wales examination frameworks.