I would also like to request this. When creating a map, I encountered a problem: if neutral creatures are given an external dwelling but no 128x128 icon is assigned to the dwelling, a white square appears instead of the dwelling's icon in the caravans within the castle. I created a mod that adds an icon for neutral creatures, but it only works on my map. I tried to figure it out, but I couldn't. "\data\UI\HireCreatures\HireWindow\Item\Dwelling" contains the 64x64 icon for neutral creatures, which should be displayed instead of the white square by default.

In short, I need to make it so that when any external dwelling without a 128x128 icon is present in the castle, the icon for neutral creatures is displayed in the hiring menu instead of a white square.