I'd say the goal was more taking the Other candidates and moving them to other groups since Other had served its purpose apparently. The ones that could be moved to US historical went there, while the rest got lumped with Europe. I'm pretty sure that was the reasoning behind the shifts and this is the end result.
It still comes off (whether intentional or not) as paying just lip service to any place that is not North America or Japan. I'd think you'd at least make more headway conversation wise if you went Europe, Atlantic (Central America, South America, Caribbean and Africa) and Pacific (India, Singapore, rest of Asia, New Zealand, Australia and Pacific islands). It would at least allow opportunity for research and education (regardless if in the end no one gets elected, which is a likely result).