Honestly, they don't need to interpret this for anyone and just allow stylized character creation screenshots to be portraits in a housing item.

That doesn't hurt anyone and fulfills the potential purpose here.

Btw this is a great idea. We have a FC leader that randomly vanished on us one day without a word. Still in the FC obv but was a good friend to all of us. We woud love to have a furnishing we could frame of his character.