There are a lot of Dolls of the World (DOTW) peg warmers in the various local toy stores. There is no news of any upcoming dolls in that line. It might as well be dead. Ever wonder how that happened?
Starting 1980, Mattel released Barbie dolls with various ethnicities, like the first Black and Oriental Barbie dolls. Although criticized for a lot of cultural misappropriations or lack of authenticity, it wasn't enough to totally kill the line. It brought different faces to Barbie's circle. It was actually one of the major selling points for these dolls.
Now, ethnic diversity can be had from different Barbie lines. This was one of the reasons why the Barbie Basics was a hit. It was the same for the university cheerleader dolls. (The Barbie look flopped partly because they insisted on including the Mackie and Aphrodite molds a number of times.) With these lines, you get the diversity in ethnicity without the cultural misappropriation. Plus, the idea of getting just one doll is not enough. Collectors welcome the diversity so most bought a few, if not all, of the dolls in a line.
Now the same formula is being used for the current Fashionista line up. You don't have to pay a "collector" price for a DOTW doll just to harvest the head. It is now easier to snag a Lea/Kayla, Mbili or Goddess face molds. These are usually reserved for the collector and exclusive dolls. You also get a reusable piece of clothing with no cultural issues, hopefully.
So what's the point of collectors buying DOTW these days? I'm really fine with them gone AS LONG AS the diversity is present in at least one of their lines available globally.