New interviews about the expansions.
https://we-are-vanadiel.finalfantasyxi.com/
There is also some interesting info about how they got around the max map size, why they added ilevel etc, as well as the company that did a lot of outsourced work on XI when they no longer had the numbers to do it in house. Why they stopped ilevel at 119 and that runefencer was created after seeing players use red mage as a tank class.
* Matrix Corporation. They worked on the additional scenarios: "A Crystalline Prophecy," "A Moogle Kupo d'Etat," and "A Shantotto Ascension," as well as assisted with the development of Seekers of Adoulin.
https://en.wikipedia.org/wiki/Matrix_Software