I haven't started wiring the copper platforms to the Tripoint NG yet. Of course, this will be the next step, but I want to enjoy all the changes, so I will wait a little longer with it.Happy for you that are enjoying yourself so much after inserting (more and more) copper platforms in your audio system. In the past I experimented in my LA set up with three high purity copper slabs as platform as well as three high purity copper slabs for mass loading. Both these steps resulted in significant sonic benefits, inter alia I experienced more density.
Have you already started with grounding your copper platforms with your Tripoint Audio ‘grounding’ stations and grounding cables? Believe me, such a step will increase your enjoyment in a even more significant way than adding the third copper platform under your streamer.
In the meantime, my Aardwark Ultra Rev1 ethernet splitter arrived from Eduardo. It's a really positive change from the Ultra, and it's immediate. Fantastic! It improves the sound in all areas and gives an even darker background. Classical complements each other perfectly! Big thanks to Eduardo!