non motorwalking option idea if dolls could be made lighter

[timetraveler1]

This is just a idea to throw out at doll companies out their . it's actually a two part idea one part is redesigning the inner core of the dolls leaving joints and frame but creating a high strength plastic or fiber mold of body shape then using a type of skinning method put the skin mold over the inner core shape , this may not be doable , but if it was it would still give the doll its curvy body and even a larger full figured body but without the many many pounds of extra weight it would probably reduce weight by 50? percent. i think this could be a very good way of reducing doll weight and even tpe or silicon cost if doll companies can figure out how to do this.

also while mentioning this i ran across an old YouTube video of a walking toy doll , could something like this be incorporated into a full size lighter adult doll. if it could it would make moving a doll a lot easier , straighten dolls legs hold onto doll arm (hands can't be held and pulled on . i hear) and doll could walk a person can guild the doll to other locations in the house etc. on its own (with owners help) .
below is the principle of how a walking toy doll works .
some of my idea's may sound crazy but who know some may work to .