T’Pau was also played by an Asian actress. (Canon violation!!!!) in a Voyager episode.
T'Pau has appeared on Enterprise, but not Voyager. Who are you thinking of?
The only female Vulcan I can remember appearing on VOY is (hologramatically) Tuvok's wife T'Pel, and she was black, not Asian.
As for Khan: I find it amusing that anyone could ever call him a Sikh. Based on what? His name? Khan is obviously not religious...
I mean, I'm sure there are a fair amount of people named Singh who aren't Sikh. McGivers suggests he is one just by looking at him (before she even learns his name), which is even more amusing.
And if CumberKhan bothers anyone that much, they can always go with the headcanon that it wasn't actually Khan, and that Cumby's character just happened to take the name after the real Khan passed away.
That being said, I actually would like to hear the story of how (in the Kelvin timeline) Section 31 managed to find the
Botany Bay before the
Enterprise did. What part of the timeline divergence made that happen?
But if course we’re talking of a show where a blonde romulan is totally abnormal
I guess they thought that we wouldn't believe Sela was Tasha's daughter unless they shared a hair color.
(but nobody cares about the suddenly appeared bumps on their foreheads), so I should have known better.
AFAIK, they only did that because they didn't trust TNG viewers to tell Romulans from Vulcans.