Well all of Jon's family have swapped so it would be fair I guess and if we make the person Sharon's ex then all of her family would have swapped as well.
While Susan is a good option for the wife I was actually thinking of one of those really posh wifes. You know, the ones who are usually older and live in mansions and they have butlers or limousine drivers. I'm not sure if we have an example on here or not.
Maybe we could have one of the students turning into her.
In terms of the endgame I had pictured that Karyn figures out a way to swap Jon back (and remember they think they're the only ones who have swapped.) but Jon is now really happy with his new life particularly because he is now Karyn's girlfriend something that he probably wouldn't be if he hadn't swapped.
And perhaps in some way maybe everyone who gets swapped ends up being happy with their new lives. Linda enjoys being the husband, Susan the daughter, Mikey being Sarah and Zoe being the businessman.
