I think the new setting for Dead Space 3 could be a Mars facility thats been infected by Necromorphs and Isaac trys to find out how it all started and stop the necromorphs from infecting the entire human race.I think Isaac could get some kind of mars planetary RIG that helps him survive on the barren planet.There could be new weapons such as a drill like gun.The necromorphs could have gained more abilitys from there new envirorment(sorry about the terrible spelling) and could have become smarter and stronger then the ones on the Sprawl and Ishimura and the entire planet of mars could have become one giant necromorph like the hive mind only bigger.So what do you think?