Wow, 7 months.  Need to update more.

In that time there have been a few updates.  A pair of swapped pins on the original footprint, optimized/cleaned-ipup layout, and the addition of three resistors to the ADC pin means the breakout is far more robust than before. I have been using it for a few network sensors around the apartment now and am quite satisfied with the revised design.

All that remains is to do some final cleanup and documentation in the EAGLE design and post it.