>>25141234The level scaling and pokemon distribution will be an issue with just the regions we know.
To put that into perspective, with the exception of Kalos, most games took place in one small region of an entire country. We had 4 games in various areas of Japan, and that country is smaller in land area than California (a lot of countries are though). Gen V only took place in a part of New York State. Pokémon World wouldn't even be a good name for it because we've only covered a tiny fraction of Earth in the mainline games.