I don’t understand why Vulcans haven’t never been given a makeover. The Klingons have been tinkered with, what, two, three times now to make them more alien in appearance? Yet the Vulcans remain exactly the way they’ve been since 1967 — humans with pointy ears and eyebrows. I can understand not messing with Spock — he’s half-human, he’s iconic, he’s perfect as-is — but full-blooded Vulcans couldn’t do with some upgrading? C’mon.
I think the Romulan redesign for TNG would serve as a good template for a Vulcan redesign. Just add more green to their physiology — their skin, their eyes, even their teeth — to make them really distinct from humanity.