i strongly support creating a distinct forum for korea (including north korea). in fact, i have a trip to korea coming up next month and a separate forum would have saved me a lot of the burden of digging for information that is currently spread across the asia, china, and japan forums (not to mention the gems hidden in the korean air, asiana, and hotel chain threads).
a korean forum can easily handle all of north korea threads, and will be especially helpful with the olympics coming up in six years.