Even though I'm not sure I like the idea of Xenos taking the features of the host, I have on thing to ask. What would a Jockey Xeno look like? And I don't mean the Deacon. I mean Facehugger attacking Engineer and birthing a Chestburster. Like the Alien that birthed from the Jockey in the first Alien. What did that look like?
We know that Prometheus was originally a straight up lead into Alien and that the Alien that births from the Jockey was called in the script the "Ultramorph" and we've seen concept art, but what could it have been in the final cut?
My theory is he'd be a tall about 2 feet taller then the Engineer with grayish white, smoothish skin. Though, it might not be very different from a human spawned Xeno considering that the Engineers are almost identical to human.This is my design, that's what I think it would look like.