Stepford wives was about a town where all the women did as their husbands said without questioning it, they were all lovely to each other, no arguing, no fighting. Turned out that the real women had been replaced with robots, although obviously that cannot be the case here. Heh.
I've also heard of the theory in official forum that they might be the ones who killed the ghost family next door, the basement is used to bury the bodies and therefore nowhere to be seen in the game (perhaps also because basement is exclusive feature to ambitions EP?)
I love the Stepford wives theory here as a I do love how in that movie, women have creepy, unnatural smile all over their faces, creating an unrealistic illusion of ideal wives, perfect families, quite like the Joe family here. It could also mean that Jane is a replacement of the original Jane therefore no skill as robot is not a base game life state.
Anyway I think the family has great story potential to be played out with:)