The holes would have to be very strategically placed else is it not simply is not like having low density willow and lightly pressed clefts or overly dried willow?
The only aim I can think of is you are strategically trying to control the density at various points to give it an optimal pick up and whilst maximising the middle.
Instead of concaving, drill in the areas where you would be concaving, I think the fusion bat seems to be attempting that.