Custom Faction Portrait and character

This is more a cosmetic thing and i just think it would make the custom factions feel more customized if we were to be able to change the character portrait for the faction and the in game character model to feel more unique. for instance if i choose the United Empire as a visual for my custom faction it would be cool to have an option to change to 2 or 3 options for a different portrait just to have a more unique fell to the custom faction. Purely for cosmetic and my sanity.