This thread is definitely more for the cool factor than the realism factor. I agree with your points, however giving a character a blindfold or something similar is the most common way to indicate it in video games and movies and such.
I actually wasn’t thinking about any of this when making the original portrait - he’s blindfolded because I didn’t want to make blinking frames at the time.
I feel like ‘closed eye’ portraits should not count. You can just set a mug to ‘eyes permanently closed’ in FEBuilder yourself if that’s your only indication of blindness. Those edits are also really simple.
Milky-white eyes, blindfolds, black glasses, etc are much more varied and worth putting in the repo.