You could always just wire your pickup straight to the jack and bypass all of the controls... Or... Use a push/pull pot as a control bypass... Or... Wire up a 'No-Load' tone control which takes the control out of the circuit when 'dimed'...
I've done all three at various times... Right now, I have one in 'No-Load' tone control configuration, which is the most useful IMO... If I was using a bass more for recording than playing live, I would go straight to the jack for the purest signal... My Musicmaster definitely benefitted from this approach. Hot, growly, pure tone!
-robert