Thanks so much for this wonderful and complete report! I had a chance to see this piece at SIHH, and agree with you that it is mesmerizing.
The "but..." is that I think you have perhaps been a bit harsh toward the original Reverso RM. Maybe I simply got a good example, but I find the volume and quality of the tone to be excellent (likely aided by the RG case) and the regulator is quiet -- much quieter than that on most other repeaters I've heard.
The new watch is great, but so is the old one!
Best,
Gary G