Hello Ron, I will try to answer your question and give a more general reply about switches.Hi Todd!
If you are able to recall, would you please compare for us your sonic impressions of the Ansuz versus the Reiki?
Was there any sense in which one was "warmer" more "full-bodied" or more "organic" than the other?
Which model of Ansuz Ethernet switch did you audition?
It was the Ansuz D2. I preferred the Reiki Switch but the person did not want to spend the funds for something that was so close. However, as I mentioned, it really wasn't a switch to switch compare as he had an optical isolator and then the Muon Pro before the switches. I would have preferred a comparison without the other filters to see the real gap between the two switches.
I view switches as "noise buffers". Let's say the noise level coming through the router is 100. We would like the noise going into the streamer to be 0. The various switches have various abilities to remove noise. Switch A may remove 10 points of noise. Switch B may remove 30 points of noise. Switch C may remove 50 points of noise. We want to put the best switch right before the streamer. So if we have switch A and B we would want to put switch A and then switch B and we would have 40 points of noise removal. We also don't want noise to get into the streamer from the environment so it is best to use a shielded ethernet cable (especially between the last switch and the streamer). But if that ethernet cable has the shield connected at both ends then the shield just provides a low impedance path for the noise to go from the last switch into the streamer. So get an ethernet cable that only connects the shield at the switch end.
So to your point. Adding a switch before of after the etheregen will almost certainly be a good thing. But you have to assess if the new switch is better or worse than the ether regen to know where it belongs (before or after).
You asked about "warmth and body". To my ears noise always robs the music of body. I don't like the term warmth as in many cases it means "blur" and I don't want blur. So when you add a good switch you should perceive more body to the music. To use some of your vocabulary...The acoustic center of mass is lower.
I hope all of this rambling makes sense.