How would the setting change if Menagerie was unambiguously prosperous?

So, I'm sure that many of you have heard the criticism about how Menagerie, despite being described as impoverished and overcrowded, looks more like an island paradise. While I'm not going to personally wade into that debate here, it did get me thinking; what if Menagerie genuinely was prosperous?

This idea for this sort of what if/AU would be that shortly after settling Menagerie, the faunus settlers discover that Menagerie is actually incredibly rich with Dust deeper in the continent's interior. Mantle and Mistral are naturally pissed to realize that they have actually, and very unintentionally, given the faunus something pretty good, but they're both still too devastated from the Great War to take any offensive action against Menagerie.

Over the course of the following decades, Menagerie experiences rapid economic growth thanks to their Dust exports, enabling the Menagerans to both build up the infrastructure of Kuo Kuana and establish new settlements in the other "green" parts of the continent. In the end, they even end up being properly recognized as the Fifth Kingdom, complete with their own CCT and Huntsmen Academy.

What do you think? How might the existence of a wealthy faunus Kingdom affect the setting, particularly with regards to the White Fang?