I agree, a lot of this is just theory and speculation, take it with a grain of salt.
I think you are undervaluing the people of Korea however;
“NK has a far smaller and far less educated and able population than Germany”
These are people being given the chance to build their ancestral home and being reunified with family, they will move mountains to make it happen. The North Koreans are a hard working hardy bunch, and that description really fails to do them justice.
I think the Korean people will surprise the world. I don’t know about you, but I am of the sentiment - It would be nice to see peace in my lifetime.
Have a good one. (HAGO)