That's exactly what the builders I am referring to are doing. It's recognized and respected by the players who buy their instruments.
Let's take a minute to review. The question is "Does body wood matter?" Some say it makes no difference. Some say that there is a significant difference, and some say that the difference is inconsequential.
What evidence do we have? We have anecdotal evidence from a number of folks supporting all three views. We have scientific theory that explains how the vibration of a string is affected by the system it is coupled to. We have mathematic models that support the scientific theory. We have spectral analyses that visually show the effects of different woods on the waves produced by the vibrating string. We have at least one engineer who has spend a great deal of time in testing and development who is convinced that the wood makes a difference. And we have a number of instrument builders who insist that the wood makes a difference and have staked their professional reputations on the use of those differences to optimize the functionality of their instruments.
If we take the anecdotal evidence out of our discussion, and we remove plain observation, we are still left with a lot of evidence that indicates that the wood makes a difference. If we remove the theoretical evidence, we still have audio spectrum analyses.