One of the main themes of the Animal Kingdom is the intrinsic value of nature / nature being in control. The value of nature is also a component of the right side of Future World / World Nature. There are absolutely parallels to this theme in the same way that there were general parallels between Future World and Tomorrowland. A point of contention historically was delineating the difference between the two. With the distinction of World Nature, Disney is leaning into the parallels between that specific section of EPCOT and DAK's overall theme.
In theory, you could pick up all of World Nature and plop it into DAK. Soarin' would be a stretch, but a new film highlighting only natural environments would make it work.
So back to the thematic fit. Zootopia is a poor fit. With the following from Joe Rohde himself:
On the other hand, while Moana doesn't have a focus on animals, one of the underlying themes of Moana is the value of nature. Assuming it's given the Pandora treatment and that theme is a factor in any attractions than Moana could be as seamless as Pandora for that park.