I was wondering the same.
I am figuring out a way to replace the hasbro slave I canopy myself.
I am thinking to cast a plaster buck from the inside of the hasbro canopy and use that to form a new more transparant canopy.
I've seen some fantastic results on youtube using a PET-G soda bottle and a heat gun,...the soda bottle will form perfectly around the plaster buck once you heat the PET-G plastic with a heat gun.