There's weirdly not a lot of IX-related content outside some design motifs and the Gigi quests. Cruise Chaser is based on Ark and Alexander Prime is based on the IX design but that's all I'm aware of.

Quote Originally Posted by Ameela View Post
The Mhach series of raids are already based on IX for the most part, Weepjng City and Dun Scaith even use a remix of its battle theme.
The theme of all 3 is a remix of the battle theme and Ozma is a boss. Everything else is mostly original content.