I have some issues with settlement crashes and a near-total absence of ambient structures in battlemaps in an existing mod and I have next to no experience with battlemap editing and no idea whether there is anything to troubleshoot in relation to the battlemaps themselves, so I would appreciate any feedback.
Is there, for example, a positive action needed for a particular ambient type to appear on a particular battlemap? Conversely, why are flat battlefields not jam-packed with ambient stuff, such as overlapping farms, stonehenges, etc? Apart from culture, what else determines whether a particular ambient type is triggered and is there a probability attached to its appearance in relation to other stuff? Is there anything known about the underlying mechanics?