They look really cute. It's similar to the approach VII, VIII and, especially, X took, and I'm fine about that, as much as IX is my favorite rendition of them and prefer them being a real race.
Of course, in a game like this, had they been made actual creatures, they would have had to design them accordingly with this kind of realistic artstyle: I fucking DESPISE XIII-2's moogle. Fucking abomination I swear.
Their function is interesting too. Hopefully they reach their Twitter goal soon and we get a video or something like that.