I'm trying to make a unique improvement that can be built anywhere on land no strings attached, but the closest I could get was giving it the IgnoreOwnership and OutsideBorder flags, which at best only lets me build it in unowned land, city-states, and civs I have open borders or am at war with. Non-open borders civs are still off-limits, even if I manage to sneak a worker in by giving the worker the ability to enter foreign borders. Does anyone know of a decent method to make an improvement buildable in non-open borders? I want the improvement to still take some time to build proportional to work speed like normal so using lua scripts to make the improvement pop up at a button press isn't preferred.
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