I've been trying to figure out a way to have both the options of using the Q-filter or neck pickup as a filter control on the bridge position, and still having a neck position to switch to. The conventional inbetween is not additionally useful.

Basically, if we can work out Bill's esquire wiring with the three bridge control options (capacitor too) and maintain the neck position through an additional switch, that gets basically all the versatility out of a guitar that I would want.