IMO, the crux of a transformation for Kim et al will be how they continue to live in North Korea and avoid being prosecuted for human rights violations once the country is freed from their tyranny.
Yes, not only that, but if they "open up," do 10+ million starving N. Korean's flood into China and S. Korea? (Yes, I realize that's nearly half their population)
This really is one of the biggest can of worms potentially about to be opened.