The B200's are high efficiency extended range drivers typically used in open baffles. From my brief reading, the Norh Pyramid drivers are from Tangbang and also rather high efficiency/extended range, but used in enclosures. The pyramid concept seems to have been a poor application for these drivers.
Doubtful that they have similar voicing/tonal qualities so would be a big crap shoot to try using in the same speakers or even in the same system of speakers (thinking of some sort of a 5 channel system). And as they cover roughly the same frequency range I don't see them complementing each other.
If you don't want to sell them, I'd build them into five pair of speakers, one rather large open baffles for the B200's for a large room, and four pair of small single driver speakers for a small room/desktop application (based on the T/S parameters of the drivers assuming you can find the parameters).