Re: high output + low magnetic field pickups.
could be, but it is more complex than that, with more wire in your pickups bobbins you increment both the impedance and resistance of the pickup, and remember that one of the bobbins wire end will be connected to ground, giving you a low pass filter in one end and a hi pass filter at the other end, so with more wire you are cutting frequencies of both extremes. But the question is whenever are those frequencies audible, and more important, actually produced my the string vibration.
The thing gets more complicated if you consider that making a not so regular pattern in the bobbin winding makes the increase in capacitance much lower, so you can add more power to the pickup without losing that much hight end.
Also yo have to consider that with humbukers, they cancel some frequencies out (they are designed to do so), and in the case of dual resonance (some Dimarzios) or hand wounded pickups that cancellation could be lowered.
So there is not a simple answer to that question.