Consider this - a new, independent superpower power that claims to be the human messengers/representatives of Thargoids. In the vein of the lore pertaining to far god cult. Maybe it could be continuation of it in some way. They claim to oppose humanity and represent the Aliens, perhaps naively, as thargoids may not differentiate worshipers from the rest, but to them they would continue to seek that connection and alienate the humanity.
Not indicative and not exhaustive list but this this could offer the following:
- a new direction and flavour for PP - something different instead of yet another human realm
- a new game loop where the players who actively hinder AX efforts could legitimise their actions
- a new types of missions, targeting human players in a new locations (reciprocally)
- potential for a new unique module or a weapon that would be (poorly) reverse engineered by the cultists
- new zone on the edge of the bubble or perhaps farther out
- new BGS opportunity / new factions opportunity