What do you think future main series regions will take inspiration from?

>The first 4 regions were all based on different parts of Japan
>Kanto based on urbanized cities
>Johto based on traditional/cultural rural cities
>Hoenn based on tropical mountainous island
>Sinnoh based on colder mountainous island
>Unova is America: the region, but is primarily inspired by New York City.
>Kalos is Europe: the region, but is primarily inspired by France
>Alola is based on Hawaii, but could also take reference from Polynesia

Will we continue to get these sort of blanket regions (an Africa region, an Australia region, a South America region)? Or will Gamefreak do more regions inspired by specific countries/parts of countries (a California region, or one based on Eastern Europe, for example)? Will they ever return to making regions based on parts of Japan?