Oh, I think the Writers and creative people can be counted on to brighten and jazz up the dark stuff, and gloss over the ships that do not turn back with enough time...
Whyever would you think that? We live in a time when dark, grim, depressing shows about amoral or downright evil protagonists are the height of fashion and the darlings of the critics. Look at Battlestar Galactica, Breaking Bad, Game of Thrones
. The creative people probably selected this project because
of "the dark stuff."