If you take a quick look at Edit profile, you'll notice you can now select just Australia, Canada, UK and USA without having to pick a region.

The regions themselves now appear in a separate menu when you pick one of the above. This allowed me to add regions for a lot more countries without cluttering up the main menu, so I've added all the regions for the Netherlands, Japan (of course), and as requested one for Sweden.

I'm not going to do the whole world because that would be insane, but if you want me to add the regions for your country, just request it here and I'll see if I have time. They must have flags.