A Predator with blacked-over eyes, foaming at the mouth, and maybe even going full-on concept art Fifield would be spectacular.
Another plot device I hope gets explored is that of LV-223 as a Chernobyl-esque bio-hazard gone out of control. I like the idea that LV-223 was pretty well contained until the crew of the Prometheus showed up. Maybe there were even alarms they triggered that cause more Engineers to rush to the planet as this series goes on to try and out the spill back in its box.