I'm not sure if there are plans to make a third Keflings, or if it'd be possible to add new functions via a DLC, but as much as I've loved both games so far, there's one thing I've felt has been missing: hugs.
See, you can kick your keflings. Which I always found a bit disturbing sometimes, how they continue to love your character endlessly despite your kicking them. Why not be able to randomly hug just like you can randomly kick? Also, in the newest game, I sometimes kick ones accidently if I'm trying to bop one on the head to level them up, when several are bunched together. It'd be nice if there was a hug function just so I didn't feel bad about it. >_>
Basically, it'd work just like a kick, except perhaps you pick up the Kefling first, and then one of the buttons gives the option to hug. I think it would be adorable, and fit in with the cute nature of the game.
Bonus points if there could also be a way to hug Ilo or Milo...