That New Zealander knows his tuning, I have to say..............
But I reckon the idea of light and rigid, to make sure energy stored is minimised and released quickly, is in natural conflict with the concept of damping. By its nature damping tries to absorb energy and not return it later, but that is a difficult ideal to achieve in practise. It is in this trade-off that I feel there is as much art as science - finding the trade-off that does the least damage to the music. The reason why I like the items closest to the component to be damped or even compliant (in the case of the feet) is because the component needs to be both isolated from vibrations by the total structure, but also damped.