Since the old site is back and being retooled into a new new site, I feel maybe it's finally time to officially support all versions of SB. After more important things about the new backend are finished.
Of course, SB2 would be more difficult to add due to using QRs instead of keys, but it'd be by no means impossible.
Maybe it could work as a third kind of page, instead of just program, and resource, we get SB3/4 program, SB2 program, and resource.
Of course, once again, this would be a low priority, but it'd be a nice extra feature to add once more important aspects of the new backend are finished.
