Well @PaulThePlug, your idea did not pass unnoticed.
I am just about managing to hold off buying the MS-60B currently on offer in the for sale department, and instead I have put my B1 Four in the final, vacant space.
My vision originally comprised an unbroken array of identical pedals. For some reason I can't quite bring to mind, I thought this might provide a talking point.
However the asymmetric addition of the B1 Four is, I fancy, a more artistically pleasing proposition.