I get your point about the setting in the 21st century, but still the Balkans have not completely lost their strategic importance. But the formation of the EU have certainly contributed to the loss of its strategic value today. Besides, if I consider your argument that the countries in the variant map are based on the way they are now, taking a brief look at the map will tell you how wrong you are.
Nevertheless, the buffer between "Near East" and Europe makes no sense. This can prevent both these countries, (also somewhat includes Russia, but not as much as these two) to think about attacking this province, which to me is vital, no matter if there are 5

around the Black Sea (some parts of the world are more important strategically, at least more than "Western Siberia"), easily allowing them to focus on other countries and not worry about each other too much, unless they are crazy enough to forego other SCs and go for attacking each other.
I hope I made my point clear. Check this link out. But of course, only one example does not prove it.
http://webdiplomacy.net/map.php?
gameID=43435&turn=3&mapType=large