It would be just as or even more useful to have this 3D tool available for the commonly used animal models in research. Given the cost to do just one single brain, it won't be feasible to analyze healthy brains vs brain suffering from disease X. Even if it was feasible, identifying anatomical abnormalities in disease provides limited insight into the mechanism of the disease... these things are sorted out with other techniques that require the use of animal models.
I think this is a nice teaching tool for med/health science students but has limited benefit otherwise.