Some faces are seriously hideous.
I have a few favorite ones, especially among the female ones (female woodelf default is stunning, I'd marry one like this in an instant), but some are so hideous I think you can scare people with them, and not in a funny way.
While we're at it:
I think all face models should be available for all races, at least for the "normal size" and "fully humanoid" ones.
Of course one can't have halflings with my favorite woodelf face, same for the Githyanki, but humans, elves, half-elves, drow, tieflings and (probably) dwarves should all have the same options.
And yes, please drop the hideous ones, there are a few among them that are close to giving me nightmares.