To be clear, I don't mind the skull so long as it's hidden beneath a virtually opaque dome. However, when the dome is removed, I think the head looks awful. The skull cavities give it a resemblance to that ridiculous Newborn and the ridges are obviously airbrushed instead of sculpted.
This is why I think a clearer dome on top of Winston's design would be ideal. I can't help but wonder whether or not that version actually had the skull before Cameron insisted on losing the dome altogether.