First of all, amazing work on this thread fillippone. I can't even imagine how long that must have taken. Respect!
Is it not better for this topic to sit in the Beginners & Help section of the forum? The method of backing up a seed is crucial for any Bitcoin holder. The more members see this, the more educated they HOPEFULLY are.
No offense to newbies, but most wouldn't be interested in securing their seed this way. We are still years away from people realizing the dangers of storing seeds in digital formats on your computer or cloud services. Some would probably not even understand what they are reading at all if they saw this thread.
I know the cost section might put a lot of users off the idea of doing this, but ignore the total cost, because the total cost is likely not going to to be anywhere near that.
Not necessarily. A good hardware wallet costs $100-200 these days. The fact that you have to spend a few hours to make it with your own two hands will put people off.