For instance swap component properties, you can define preferred values in Figma. The components you can select for that are organized by page and frame(s) they are located in. I have icons in my project that each are a component which are inside the same frame. Now, for other components I have defined an instance swap property to swap the icon in that component. For this, I checked the checkbox to select all the icons in the icon folder/frame. However, when I create new icon components in the frame, they are not selected automatically which means that I have to reselect all icons for each component that has an icon instance swap property every time I add a new icon.

I wish for newly added components to be automatically selected as a preferred value if that component is inside a frame where all other components have been selected already.