Cosmic Exploration follow up quests thoughts
The seeds for a Garlemald Restoration event are absolutely getting planted. Our sample size is 1, but Junta did express openness to the idea of collaboration.
Broader, more wild speculation
Rainbow Crystals were brought up again to remind us that they are used for environmental stabilization. Our efforts with Eden, and The Empty also yielded a Rainbow Crystal. The Rainbow Serpent, a reoccurring Australian Aboriginal deity that has been associated with being a bringer of life has been recently brought to my attention, and my Meracydian brainworms are feasting especially with the vague mentioning of a serpent, and other environmental weirdness in the Endwalker Studium quests. I think somethings that is inspired by the Rainbow Serpent may become a thing in ffxiv.