Not sure if this counts as a legit bug or is technically a feature request, but with Nauvis, setting multiple and non 0,0 starting points works as expected.
Vulcanus territories don't respect the starting points unfortunately.
Changing it (during on surface_created, before chunks are created) ends up with players in the middle of demolisher territories.
Thanks for all the amazing modding support and the game itself!
[Earendel][2.0.12] different starting_points in map gen settings doesn't work on Vulcanus
Re: [Earendel][2.0.12] different starting_points in map gen settings doesn't work on Vulcanus
Thanks for the report. We will add support for multiple starting points soon.