I also suggest to make a custom Game Over screen. Type of early Fallout-esque with grim sfx and disturbing imagery. But I shall leave that one to your taste.
Viewing post in Instant death delves/missions or hardcore mode implementation.
Come to think of it, if Nanites in host's body continue to live even after his death, this opens up multiple outcomes. For example, they can turn you into undead, mummify you like those dead wolfs from Chernobyl(not sure if I can post imagery of dead animals here), or they just simply let you develop skeletosys).
Anyway, that's just food for thought and nothing more. Keep cooking what you are cooking!