I'm curious what was included as the extra bonus features - especially if they talked about deciding the anatomy and behavior of the synths and how the actors who played synths found that experience.
My one disappointment with season 1 is whether William Hurt's character will return. He was a highlight for me and would make a great "advisor" in season 2.
They talked a bit about it, all the actors who played synths went synth school to learn how to act and move, even the minor players, they did also talk about how they decided on the look of the synths but they didn't go into any great detail on any of that.
Most of the extras weren't exciting, some brief interviews and character profiles.
Yes it's a shame about William Hurt although I guess there is a way they might bring him back, I do hope Odi returns in the second series even if Hurt's character doesn't