Isn't Ducktales 2017 where the deformed nephews medal in UX is originally from? I got that thing early in my playthrough and ended up selling it (even when the game recommended me to use it) because it is so ugly that I just didn't want to see it...
That said, I like the idea of Duckburg in KH. For many people, including myself, it is THE Disney world. But it should be the original version from the comics, as created by Carl Barks and perfected by Don Rosa, and not any low-quality alternative. Of course, as the original homeworld of all the Ducks and Mice, it shouldn't have anything to do with Quadratum, and therefore would have to wait until after KH4.