Sadly, much "human touch" for men has been the touch of women, in a sexual manner, to make us addicted. Start us young - I did a post some time back about it, might hunt it out again and reread it.
After a little thought, I think that the following might be the gradual evolution of the sex-doll:
* scent - allow the owner the ability to put together a particular scent that he likes
* warmth - not just inside, skin-temperature as well
* breathing sounds
* random sounds - not much, every couple of hours or so
* random twitches - not much, every couple of hours or so
Otherwise, just a "sit there and look pretty" type of thing, as TFM states in his video.
I leave you with this, the state of those just starting to awaken: