I was gonna jump on this, then I realized that I didn't really have any good ideas apart from "This one starts shrinking" or "That one starts shrinking", etc... So I'll leave the scenario game to the next guy, except to say I think I'd prefer to see Suz shrink because her outfit is more conducive to the type of stuff I like, too long sleeves, too wide pants that she has to hold up, shirt slipping off her shoulders, etc.. As to why she'd be shrinking, well, she's shrinking because she had the unfortunately luck of being posted to this message board
Like I said, I got nuthin'