Is one cause of the perceived difference between maple and rosewood fretboards how securely the wood anchors the frets? One end of the vibrating metal is held by a nice big bit of metal, the other end by a fleshy finger pressing it against a thin strip of metal. Does all fretwire go the same distance into the fretboard? Does harder fretwire make a difference to the crispness of the attack?
At the other end of the string, what are the factors affecting how well the string is anchored to the body? The softness of the wood, how the bridge is seated into it? (Does G&L's bridge, which has a broad foot that sits in the body, mitigate the effects of using softer woods?) If you seated both the bolt on neck and the bridge into a single piece of steel, what would that do to the vibrancy of the string? And how many 10s of 1,000s of instruments would you have to test in laboratory conditions before you were able to put all these factors into an order of importance?
I'm very happy for absolutely none of these questions to be answered