Theories for the DLC?

With the DLC still fresh in our minds are there any theories anyone has about the two parts that they want to share? I'm haven't reached Area Zero yet so no spoilers on anything involving that please, but is there any ideas you have on how the stories we'll get will go? Personally I think that those four we saw at the Blueberry academy reveal will be an alternate Elite Four, with their type specialities being (clockwise from top left) Ghost, Steel, Psychic and Fire. Does anyone else have ideas on this, for example do you think Nemona, Arven and Penny will be present in these areas too?