Congrats!

I liked what the reviewer was doing: "I also listened to some well-mastered CDs and
my own 24-bit/96 kHz acoustic guitar recordings."
So he has a reference to compare with - his own guitar.
Many times I see reviews based only on CD audition. The reviewer compares the actual sound with what he *thinks* is recorded on the CD. Sometimes their guess is pretty close sometimes not.
Personally I don't see a problem with the headphone jack. It's very likely that the DAC will get connected to a Bryston preamp (and they all have a headphone jack).
I agree with you on the USB.
However I would like to see in the future a HDMI input capable to convey SACD DSD signal.
Otherwise, please have mercy. My Visa is already maxed out.

Nap.