OC is an extremely isolated content island that offers almost nothing if you don't intend to do Forked, just FFV cosmetics that are purchased with something that is best farmed outside of the CEs and FATEs. Demiatmas are a one-time step that is better done via mainland Tural FATEs(especially verdigris), and the more recent step doesn't include OC at all. South Horn was doomed from the start because it is yet another piece of content that has an extremely limited shelf life, and it's not like leveling a new batch of phantom jobs in 7.45 is going to revitalize it.