**King Arthur: "What?"
Knight: "He said he's already got one."
**[Monty Python's Holy Grail]

Ok, kinda lost me there in the description but got the general idea. I'll have to catch the film.

Don't think you will be able to just rescale & get a second figure, that small,inside. Figure building's not my strong point, but I assume each body part would have to be individually rescaled and all the joints adjusted.

Does not sound like even extra layers with Staale's technique would provide the offset space inside the body that you would need for such an effect.

Though, ...for an extra "skin" layer, there's always the catsuit perhaps?