I totally agree with Wilkie. If I had only 4 input cap values instead of 7, I would have gone the Rototone way. I supposed I could have run two of them in parallel for even more input cap values, but that would have been even crazier than what I already was doing in the circuit. I do have a few Rototones for future projects such as an Electra style distortion with one Rototone for 4 clipping diode pairs and another switched Rototone with 4 single diodes to make an asymmetrical clipping option. I plan to pair this with a paramix to blend in the straight guitar signal. Crazy!
That is why this is a great hobby, although I think I may using some out of the box thinking on this, but just like everything else, somebody probably has already done this.