I would greatly appreciate having the name and address of the person who created the 8 pack of Super Hero-themed lenticular puzzles and the one who decided Polly Pockets shoes ought to come off. Then I would grab that person's shoulders, shake them very hard while screaming, "What the heck were you thinking?" in their faces, and then probably slap them.
Does this person not realize that the type of child who is stoked by Super Heroes is probably not meticulous enough to do one puzzle at a time and then return its pieces into a segmented plastic tray before starting a second and then never shake or tip this box thus mixing up the pieces?
I would toss a handful of uncooked rice on the carpet of the Polly Pocket creator and have them find each and every piece and cry if they did not, so they could see what it is like to mother the owner of this toy.