Not sure that I agree with that. Part of what is so cool about the North End is that you have varied view corridors that disappear as they wrap around corners, or the street curves away. That's a two dimensional feature, but there is also a three dimensional element to that, which comes from the sense of what is lurking beyond those curves. Because you can see some of the buildings peaking out above here and there, you feel invited to explore those turns and twists and alleyways.. If the approach to the neighborhood has tall structures blocking our views of what lies within, then I don't think the area seems as interesting or appealing from a distance. It would effectively re-create the harm caused by the elevated Artery.