the SP10 has so much damn torque that you would think you really need something massive to hold down the turntable to sink all that vibration. Didn't Mark Kelly tell us that Sansui experimented something like this about that return torque that's causing the turntable cabinet to color the sound?
Absolutely
I agree that if Raul or anyone else prefers the sound of "naked," that's fine, but chassis rotation in response to motor correction is precisely what I'm hoping to eliminate. The only question for me is how far you must go before no more improvement can be had.
On my MK2 Wenge plinth and my MK3 Ebony I experimented with various isolation feet and the roller types low friction overcame the plinth mass and allowed the chassis to respond to the energy, making for the analog version of "digital jitter."
This convinced me that the chassis must not move, even microscopically. The only two options I've found that achieve this and still provide "isolation foot improvement" is (1) Still Point system with threaded riser, (2) A military sheet material I've been experimenting with some months. This military material has incredibly high sheer strength in the horizontal plane but compresses in the vertical plane absorbing bass energy relative to it's thickness and the mass (total weight) applied.
Fortunately I found some an engineer on the project that had specifications for load and thickness and this has made experimenting a more fruitful venture.