It's very cute. I like the little critters. I get the sense that this is going to be really good someday. That said, I'd like a little more interaction.
You could make the Calbies like virtual pets and have the player feed/house/water them to keep them happy. What if happy Calbies produce a virtual currency that you can use to buy them different outfits? Or you can't get new Calbies unless the ones you already have are happy?
I'd like an option to pat my Calbies on the head. Just a thought.
What if some of the Calbies will be friends, and others will fight, and the player has to figure out how to put as many Calbies as possible with a friend without anyone fighting?
Maybe you have to give your Calbies the right toy. For example, the electric fellow might like a tangle of copper wire, while the turnip would prefer a lump of dirt. The droplet might want a stuffed animal while the frosty one wants ice skates.
Essentially, those little guys are really cute and I just want to see them in some animations.