With no absolute Prometheus link, who would like to explore the alien temple (as seen in Prometheus) with a chance to see the engineer's head and all, and per chance to aquire some knowledge from the engineers?
It may not be LV-223, but we are on LV 426. Close inhabitants right there and there might just be something other than the parked Juggernaut already localized you couldn't help but wonder if there is a temple situated somewhere close by....
example: Detonate a bomb at Hadley's Hope and destroy the colony & yourself ENDING THE GAME RIGHT AWAY OR you have choice to venture into a distant alien temple using the APC, and try to find out some secrets in order to eliminate the Aliens with something sacred and choose to play on for 4 more hour extended.
Cast your votes people.