What a disappointment, but life is full of them. Thanks for the review.
One nagging issue. You noted that, "The two corners or angles in the main pole improve the usable interior space by making the side walls steeper and decrease the risk of a pole breaking under stress," and there was some additional comment to the same effect.
Could I suggest that with one or two elbows used to create angles in a hoop, when the hoop is subjected to high stress from distortion by wind, it will fall disproportionately at one of the angles. When the angle happens to be formed by an elbow, a piece of prebent pole, there is also the likelihood that the bending process may make it weaker than the straight portion of the tube material. Combine these two factors, and the result is more likely pole breakage in high wind, either at the angle or slightly removed from it where the elbow joins the straight pole tube. So I had trouble accepting your last conclusion.
This risk can be reduced by having more angles to distribute the stress, as with Roger Caffin's angled hoop tents, by high radius elbows, by reinforced elbows as with the EMP Kilo, and guylines from the angles to the ground, as often used to support tents subjected to high winds. Or, by really high quality elbows. Given what you experienced with the quality of the inner fabric, I wonder if one could expect high quality elbows.
Great review and photos. Thanks, again.