We've recently, in the pre-release of X and Y, had the fact that Kalos is based on France shoved in our faces on numerous occasions (like in that artwork in which someone is holding a baguette). However, with Unova being based on New York as well, it raises an interesting question: where next? Assuming Game Freak continues to base its regions on real-life places outside of Japan, where do you want them to choose? Personally, I'd love a UK-based region. Admittedly, I live in the UK, so I'm probably a bit biased, but I think it has such a rich history that it would be great for inspiration. Not only do you have the Celtic and Medieval cultures, which I think are amazing visually (although, to be fair, they aren't confined to the UK), but also some great architecture which could be shown off properly with the 3D environments we now have on the 3DS. I think a Pokémon Crystal Palace or Winchester Cathedral would be pretty spectacular.