Omar:
Use of oxygen analyzers was thoroughly covered. Use of helium analyzers was discussed, but comments ran to the effect that much mixing is done without HE analyzers. I may have headed of some of the gas compressability questions, but little about this is mentioned in the text.
Fishkiller:
I haven't moved yet, so I did my course in the Atlanta area with my "local" course director. She frequently volunteers to be PADI's guinea pig for testing new things (she was also one of the first to test the online PIC system). She was one of two course directors to jump through PADI's hoops back at the initial unveiling of the program at DEMA.
Now of course you could use the shortage of this vital course as the perfect excuse to visit Palau. I'll let you know when I arrive.
And for those who speculate, yes PADI has a trimix course in the pipeline, which will be released as a DSAT course. No timeline on that yet.