Sara and Cora aren't even close to ugly, so it's a pretty ridiculous argument to be having. They look derp on some angles or when pulling some facial expressions which is a mass effect tradition. Mark Vandermeer spent half of the original trilogy looking like a pedophile every time he smiled.
Recent promotional materials for Sara look pretty damn good actually:
Less flattering, but probably what it'll look like in gameplay:
Then another gameplay one but taken from the pause menu screen:
You can see what a huge difference lighting conditions make, hence why professional photographers and cinematographers take so much care with it to make everyone look as good as they possibly can and why your custom shepard who looked totally fine in the character creator screen suddenly looked like a botched plastic surgery job as soon as they entered the game proper.
Cora looking good:
Cora looking not so good:
If women with undercuts or imperfect noses terrify you and them existing in games, movies or television make you worry about the SJW adgenda I'd recommend not walking outside in any major city and avoiding most media in general. In any case none of this matters at all because there's an 80% chance of this game simply being Dragon Age: Inquisition in space, and consequently being a terrible game as a result.