I agree, PS4 makes perfect sense where they're coming from. Me personally, I'd put it out on the 3DS, since that is a device with an existing clientele and may be the better choice for targeting the youth. At least, if I were a parent, I'd get my kids the console they can play Pokémon on and not Moero Chronicle. But I think they chose the Vita for the communication between the "home device" and the "away device" - putting it out on PS4 and 3DS makes no sense in the system they're aiming to provide.