A) Very limited moblity, the kind of mobllity that would be useful in the bedroom. It would not be able to walk or move about the house or pick up objects, well it will be able to 'grasp' one particular thing

B) To be able to speak and understand human speach, to be able to hold a conversation. Initially it would be the typical sexy chat type, but would be able to upgrade it and add more advanced programing
Also each upgrade would have tactile feed back, there would be sensors embedden in the dolls body that can sense your touch and respond accordingly.
So If the doll manufacturer could only offer one of these options which would you prefer?