Yeah, an option for the player would be great, I got two great images for m characters as nude or armored that I'd love to swap between. Also I think I might know what the issue is? I think it only reads the offset when you start a new game. But there's no way to know how my portrait will look in game, except by saving and loading and then talking to someone. Is there any way to adjust the portrait offset on an existing save file?
All the player character information (minus the sprites themselves, only the paths to the files) gets baked into the save file when you start a new game. It's not read from the JSON file every time. You can't change description/scale/offset/racials on an existing save file.
I will change this next version though since it is intuitive.