Ok, because you called me a troll, I will answer your questions. And for the record, I am taking off my "Atomic" hat here and solely replying to you as boot-fitter with 10+ years of experience working on & selling boots and fitting some of the best skiers in the industry.
1. you are right that lateral stiffness is crucial in producing a proper turn, but Nordica's design does not lend itself to increasing lateral stiffness. Material selection is more important than their 3-piece shell construction- just look to any race boot (including Nordica) for which boots produce the highest lateral stiffness.
2. progressive flex is important, but this trait is not unique to Nordica since most every overlap boot produces this.
3. 45° angle buckles don't actually provide more heel hold- this is a function of last shape and liner construction. Again, many 4-buckle overlap boots have far more heel hold than the Firearrow and it is not because of their buckle arrangement. Also, 45° buckles provide constant headache for boot-fitters trying to solve medial ankle & navicular issues. Stretching and grinding in this area is rarely successful.
4. All liners are handmade, with machine help. No liner is completely made by hand without a sewing machine.
5. Nordica is not the only company using rubberized boot boards, but they are the only company that has chosen to rivet the boot board into the chassis which makes customizing the boot board impossible.
6. Nordica is not the only company using dual hardness, replaceable soles. Even FT has that now.
7. True
8. All companies measure their flex in terms of Newton meters but chose not to say that to consumers because it is even more confusing than just saying flex. Also, I don't know of anyone who actually cares about flex, progressiveness, and rebound. In my opinion, they are making a complicated idea (boot flex) even more complicated not easier to understand.