T47 is great for versatility, UDH is great for future compatibility and replacement parts. The use of the FSA ACR / SMR bearing spec is really helpful for headset replacements and fitting components. Assuming its the standard 2.5mm recess format with the 51.8mm / 52mm top bearing and it would make finding replacement headset parts easy. Though i would love to be able to fit a 33mm knobby on it like the Enve Melee, its got good enough tire clearance that I wouldnt complain.
This bike has all the ingredients to be an open mold hero. I just doubt we will see them open this up for direct sales at the factory price point, but if it does happen in the next couple of months, I will buy / preorder one.