That for sure is
the most high end custom base a mini Mac has ever rested on
.
A suggestion though :
In general the concept of the feet is to drain mechanical vibration out of the equipment and protect it from picking up outside vibration. When the spikes are isolated from the platform below, they might not do their job in this respect. Have you tried to use the spiked feet without the cones? Of course the surface below will get scratches if the equipment is pushed without lifting it but just to experiment if there's a sonic difference, I would give it a try. Especially with the BHSE itself.
If there was any difference, your set up should be able to reveal it.