I think the voume control is a little extraneous

This isn't nearly as pretty as the jazzymaster but:



I have always lived by, "A good-sounding guitar can only be enjoyed when played, a good-looking guitar can be enjoyed regardless."

To further extrapolate, a guitar's face should never be fouled with knobs and switches. The potentiometer is one of the worst inventions. Ever. Resistance should always be a fixed value.