Re: Klingon augment virus/Into Darkness Klingons
What about the Romulans, BTW? Honestly, I never saw the point to those V-shaped forehead ridges they got in TNG
They only did that so TV viewers wouldn't confuse them with Vulcans.
In-universe, it's not a big deal, as Spock - who has no ridges - is able to pass for a Romulan and nobody questions it.
"If the world was perfect, it wouldn't be." - Yogi Berra