There's an argument to be had for different faces.
Like, how many people do you know who look exactly the same? Barring identical twins, I'd say not many.
You'll have certain friends/family/colleagues etc. who share similar traits, sure - but everyone is different. Eye shape, nose size/length, mouth shape, jaw, cheeks etc. All different and unique.
So I get where Prey has gone and, when looked at it in that regard it's a complete nonissue.
That said, it did feel like almost a different species when Feral was unmasked. To me he looked like he was more related to the Super Preds from Predators. He was still awesome BTW! But after seeing the bone mask and how utterly incredible and cool that looked I think a more Winston-looking (or even inspired) Pred face would've been the cherry on an otherwise perfect cake!
I do think a lot of the wow factor comes from the masks, though. Like for 95% of any film (bar Predators w/captive) they are masked. And like Feral's bone mask, so long as that looks good - I don't have too much of an issue with what's underneath.