Kamen Rider Kabuto/Headscratchers


 * The Natives planned to bring world peace by turning all of the humans into Natives, wouldn't that just make it so all of the wars were being fought between Natives rather than humans?
 * Maybe changing humans to natives works the same as the copying Worm do. When a Worm copies a human, the Worm still has a singleminded insectlike way of thinking (With the exception of those higher up worms, who sometimes seem more intelligent than your average human, but they can be compared to the queens of an insect-colony). So when a human changes in a native, so does its way of thinking. The victim will think Negishi/Mishima(whoever was in charge wasnt clear) is his 'queen' so will obey him every command. That way they will stop all wars, because everyone would be part of the same 'hive'. The Natives that get humanlike traits(like tadokoro) will be easily eliminated in the new Native world order.
 * Maybe. Negishi's reasoning was that the conflict was born from the racial divide between humans and Natives, so he tries to remove the source of the trouble by eliminating the racial divide altogether. It's not the most brilliantly developed plan, but that's a hastily tacked-on Big Bad for you.
 * I'm willing to bet that was Negishi's excuse, to make himself sound more heroic. Probably he was figuring he'd be the "queen bee" of the Worm once everyone had been changed into one, effectively becoming the ruler of Earth.