Need to remember that post-6.0 is about new beginnings, not just moving forward. The Omicron quests are about new beginnings for races that had died out.

They're also moving forward as they aren't returning to the states they were in at the time of their civilizations' deaths. The Karellians have stopped warring and are slowly learning to work together. The Grebuloffs are learning to care for their ecology. The Ea are learning to appreciate corporeal life for the sake of living, not for dying. Presumably the Nibirun will likewise come around in one of the last two reputation chapters, plus this wouldn't be complete without a visit from the dragons (not that they have completely died out thanks to Midgardsormr).