then you seem to have huge leaps in other technology (holograms that breathe and need to shower, for example)..so a little inconsistency there.
Need to? We saw she can clearly simulate breathing and expels air in the pond, and she even says its the first time she's been wet (iirc), so it does seem to be seeking to emulate the average teenage experience.
Weve also not been told if Darems appearance in Episode 1 is his real Khionian appearance (to me, it suggested it is), and why hes choosing to appear as Human (other than the shoulder barnacles).