We had a lot of talk on a board where this was all put together (
http://www.ffonline.com) and people started throwing all sorts of things around. Cyborg ninja pirates, zombie ninja pirates, vampire ninja pirates, the whole nine yards.
I've come to the conclusion that any addition to the ninja pirate duality dilutes it. Cyborgs, zombies, and vampires are cool and all, but they add a qualifying dimension. The ninja pirate doesn't need these extraneous parts because, well, they're too damn cool.
I'm thinking that these qualifications are somewhat like additional items that help bond ninja and pirate together in instances where the original element is just not cool enough to become a ninja pirate on its own. Sure, a cyborg pirate is cool, but we all know that at the end of the day, plain ol regular pirates are cooler. Thus, the cyborg augmentation allows for the binding of some ninja elements, but now the coolness is divided by 3, as the creation of the cyborg ninja pirate is artificial and simply weaker in coolness than a true ninja pirate.
I think that the addition of qualifiers changes the function thus:
C(XNP)=f(N^P)*([N/P]/|X|+|X|), where X = the coolness of the qualifying augmentations. N/P always equals 1, and the absolute value of X plus the absolute value of X is always going to create a fraction by which the initial exponent N^P is multiplied. Thus, the addition of a qualifier inherently decreases the coolness.
The |X|+|X| is due to the fact that the qualifier may be added to either ninja OR pirates (as you may have cyborg ninja OR cyborg pirates) and, as such, both combinations must be taken. This eliminates the paradox of having X be a coolness factor of 1, which would make the function equal to the original ninja pirate equation, which we know is not cool. But then you may as why something that is inherently cooler (such as a qualifier with a coolness value of 9) makes the coolness drop dramatically than something with a value of, say, 3. Well, we can all agree that cyborg ninja pirates are pretty damn cool in their own right, but uncommon juxtapositions generally tend to make things even cooler than common ones. A cyborg ninja pirate just isn't as cool as a schizophrenic ninja pirate, or a ninja pirate who loves show tunes, or a Buddhist ninja pirate.
It is all quite simple, really. Some combinations are cooler than others, but none are as cool as the ninja pirate.