I'll venture a guess that given the pride of those involved the quality of this restoration exceeds even the high standards of the original builders. I have tremendous respect for those that designed, built flew and crewed these planes.
I've been following this restoration off and on for the past few years, so cool to see it flying again. Old planes, boats, ships, cars and so on are so much more interesting because they were all so different. Things now are so much more homogenized (Boring!
). I wish the spirit of innovation that produced these type of designs would have a resurgence, I think we'd all enjoy the ride.