"Given a superswitch, and provided it can fit in the cavity, you can definitely do as you want. With two tones, id wire each one directly between the two main leads coming from their respective pickups, each with their own cap." You can't do that, because the "hot" lead from the neck pickup gets swapped with its ground lead in the out of phase tones. That's been discussed. My solution was the only way to run two tones in that scheme. "Because you are having a series option, this will give you really interesting tones as you fade down the treble off one pickup, letting treble from the other come through" Nope, that's not the case. I have MANY guitars with the series option, and it's been my experience that the tone control on the "base" pickup - the one that stays grounded - has literally NO EFFECT on the tone of the combo. The tone control on the "secondary" pickup - the one whose negative lead was lifted to run in series - has the effect you would expect for a "master" tone. So, only one of the tone pots has any effect on the tone of the series combo.