The numbers above may be artificially low and that as more people try things these the numbers will increase. The biggest remaining challenge seems to be to get a handle on FPGA-PHY signal timing and alignment. Once this is figured out a bit better then success rates should near 100%. Also, although it seems like only 5 people on the planet with Angelias and another 5 people with 16-bit Hermes have actually tried P2, so far there has only been a single report of an F3 PTC overload (on a Hermes), which is very promising.
Doug has also made huge strides with Thetis bug fixes. Expect a 2.6.5 release soon with most of the reported critical bugs fixed except for the "comma" problem. The comma issue will, I hope, be fixed in 2.6.6.
Rick and I are both very busy with family and business for the next two weeks. Therefore you can be certain that there will be no more firmware revisions until then

73!
Scott