For the next big update:
- the use of static custom portraits in custom campaigns is now supported! ("Static" meaning that they won't support dynamic changing of expressions or clothing; variants of this sort will need to be saved as entirely separate images.)
- when creating a new custom campaign, the game now creates a Portraits subfolder and saves a copy of instructions for creating and using custom static portraits there in CustomAssetInfo.xml.
- the create character interface in the campaign creation suite now has a Custom Portraits window that pulls in all graphics found in subfolders of the campaign's Portraits folder for use as a character's portrait.