To me, the BL9s were perfectly in keeping with good design whilst still following function. Yeah, okay, the top seems a little narrow from the first look, but that is probably because one was used to not having speakers narrow that much at the top. As it stands (literally), it seems well balanced yet still look as if it can produce a firm bottom.
The BL5s are very different speakers to most other speakers, but again, form follows function. Yes, one could argue that those alu-discs are ugly or look out of place if so inclined, but they perform a function, and when it comes to proportions, they are both pretty well designed.
But even if we had come to conclude that the BL5s and BL9s were butt-ugly, that they didn't grow on some on us, that has no bearing on the BS8. They could be exceptional design blunders yet the BS8 could be design heaven. Or vice versa as it were. Each product has to be "examined" on it's own merits. The BS8's own merits involves different size LCD screens to be fitted, and that, it seems, are its downfall when it comes to the design.
Just because a design is made on "contradictions", doesn't mean that anything that clashes is designed well according to the design brief. I linked to a CH37 chair earlier (at the top of this page, I believe), and it too have "contradictions". Contradictions is often used to juxtapose different materials and different parts of a design (round table top, square legs etc., concrete and wood, glass and concrete), but that doesn't mean that any contradiction therefore can be construed as "good design".