What if Germany had taken the Philippines instead of the Americans and after WW1, Japan gets it as a League of Nations Mandate? How will that affect things in the following decades? Will Japan still be as militaristic with its imperialist ambitions satisfied with a colony like the PH? Or does it not matter and serve only as a stepping stone in acquiring China as a colony? What will happen to the balance of power in the Pacific? In relation to the other powers like the British and Americans?
Also, what will happen within the Philippines? It would be interesting to see a hybrid Spanish-German-Japanese influenced Filipino culture.