Ooh, thats good news, sounds like they’re working on it, hopefully they’ll be able to implement it into map controllers.
The ocean spline, outside of the spline is the ocean, physics and water, inside the spline is void with no ocean.
You can stretch the spline out underneath your biggest island if you want, so it’s inside the coastline and around any lakes, pools or most of a river.
There used be occasional conflicts when the ocean was under another VK waterbody and collisions or water fx would go funny in places. I think it has mostly been fixed though.
It will also allow you to make landscape below the ocean level without the ocean being there.