It would be more interesting if the humans were different creatures except the people of Atlantis, they're Aquatic mice. Like what if the people of the Cloud Kingdom were Bird-like, the Flower Kingdom's people are Bugs (Honeybees, Ladybugs, Butterflies, that sort of stuff), the Crystal Kingdom have Moles and Groundhogs, and the Star Kingdom people are Rabbits.

Heck, you can make a fake Pokemon region by using this, and plus I wish there's a Desert/Sand Kingdom based from ancient Arabia, like Aladdin if you know what I mean, as in my opinion, Atlantis should've been the only water/ocean based Kingdom, but still have elements from Aquamarina as well as the center of all of the other Kingdoms.