I don't know why, but this issue has not been raised: if the blueprint includes cargo depot modules, it will not be able to be placed because the cargo depot module displays "must be placed in the highlighted area". Pressing shift can force placement, but modules will not be placed, resulting in the need to manually add modules.

I think this should be related to the mechanism that 'ancillary buildings can only be placed in specific areas around the main building'. In order to prevent the occurrence of ancillary buildings that are not attached to the main building, they can only be placed after the main building has been placed. I think the mechanism can be changed as follows: if the blueprint selection scope includes ancillary buildings but does not include the main building they are attached to, they will be ignored. If the main building is included, they can be placed simultaneously.