>>118722667Bate minimum would be something that's not uncanny as fuck or make you piss yourself when it come wake you up.
They'd probably make the facial structure simpler, with no mouth since it's really a waste of resources, and the bare minimum for emoting.
The nandroids have full facial features with working lips and everything, but a cyclop with eyelids and an eyebrow would work just as well. Remove the wig too, it's just for appearance purposes.
Fewer digits, less flexible joints, a shorter battery life, slower processing speed, have less redundancies, a relatively small height (just get a stool, it cost less than a few cm of legs and torso), less overall strength ...
I'm sure you can shave a few thousand dollars of the final cost like this.