Eric Schrier, Disney’s head of international local originals, admits he was “a little hesitant” when he first heard the pitch to remake the hit FX series The Americans as The Koreans — a big-budget, local-language reimagining starring Lee Byung-hun and Han Ji-min as a pair of North Korean spies masquerading as a happily married couple in 1990s South Korea. “I was the guy who developed The American...