I really like this idea though as pointed out by @Elegy it's not very likely. Indonesia as a whole has a lot of both Oceanian and Indian influence while also having a lot of indigenous cultures that can differentiate it from the Eelakin of FoTS. I wonder what kind of state you are imagining. Personally, I think a Majapahit style vassal-liege archipelagic empire that is both agrarian and maritime could be very interesting and maybe with more emphasis on eastern Indonesian cultures, like Bugis or Banda, instead of the Indian-style devaraja kingdoms of western Indonesia. Perhaps both the coastline and rivers could be the geographic aspect to access the Dor in this empire.