This is a small sample of what's to come should North Korea collapse.

I can see that south korea can experience a huge boost in their labor force that's currently filled by foreigners.

On the other hand, feeding, educating, housing, employing North Koreans to integrate into South Korea is going to be pretty hard.

China is also unlikely to allow US bases so close to the Yalu river.

When I factor in all these things, I believe that Korea will go through a transitionary state where two systems in one country emerge.

All in all, it could be that the unification collapses due to the structural pressure it places on South Korea and it's citizens to oppose it-Nobody in a capitalistic society is willing to trade away their good life.

Whatever happens, I only wish North Koreans live a free life, whether it's under South Korea's control or not.

Because North Korean collapse could mean a significant economic burden as East Germany's collapse was to West....but they've only had couple decades apart, North Korea is like dealing with Chosun dynasty.