>>43192903japan is fine because that's the country the devs are from.
>USA has even more wildly diverse climates because it’s the size of a fucking continentusa is a shithole with no culture which is why gf had to shoehorn pieces of another culture (zekrom and reshiram/ying yang) just to make it interesting. there are probably other places on earth that would be much better for the diverse climate thing. they could simply base the region on more than one country if they needed more landmass