I agree on the camera.. it's been especially useful in more than a few places on my work truck, but I worry that features like BSM go along with a trend of designing more "stylish" interiors that have significantly reduced visibility along certain angles.

The difference between my small Japanese car and my sisters American SUV is amazing. I can physically see everything around my car, in her car, there are huge chunks of surrounding space that are blocked by pillars and other design considerations. If you feel you need BSM, then you may just be driving a horribly designed car.