I am thinking of fitting a humbucker in the neck of a Telecaster. One thought was that the if there was tone and volume for both pick ups there would be more variety of sounds. The control panel is fine as it is but I can't see how it be expandrd beyond more than 3 knobs and the switcher. Looking at some cool Fender bass knobs I came across some concentric examples. I thought this could be away of getting more out of the space available. Here us an example of what I was planning but with normal knobs at the moment.