Steve, I'm not at all sure this will be any more helpful, but you might enjoy these two famous guitar-making stories.
One classical maker argued that the entire sound quality and projection came from the back wood... so he constructed a guitar in which everything was wood, as normal, except the back, which was papier-mache. It is said that the sound quality was excellent - but only the guitarist himself could hear it!
The rock equivalent, probably apocryphal, is of the maker who argued that sustain comes from the density of the body. So, to prove it, he made a guitar with a marble body.
The sustain was wonderful... but nobody could lift it!
- Ian B