Here's a post I made recently on this topic in the Imagineering sub-forum:
Zootopia does not fit the mission statement of Animal Kingdom no matter how you slice or dice it. Its underlying themes are about racism, stereotypes, and at the face, it is sort of like a buddy comedy. I loved the film and would love a ride, but as epic as the world it occupies is, I'm skeptical it would translate well to a theme park. The biggest relation is animals which is a humongous problem as I'll explain below.
While Pandora proved an IP based land does not have to have anything to do with the film's story at all, just the message and the world which it resides in, the overall message of the film was still about conservation and an analogy for Earth which ties into the mission statement of Animal Kingdom. It also checks out a mystical land which was supposed to be added to the park from day one. A city doesn't seem like it would work if they focus on the place and ecosystems.
Plus while Zootopia sounds like an intriguing concept for a land especially at Hollywood Studios, part of the reason the film was so cool was that it showed animals living in cool boroughs. There will be only humans walking around the land, not animals, so that kind of messes with the land. Since Animal Kingdom is about nature, then how will modern buildings fit? They could make it fit, but they would have to drastically change the way they do it... it would have to be about different ecosystems which could work, but I worry that it won't happen that way. I know obviously that is not a dealbreaker, but it is something to consider since that is the only means of connection it would have to Animal Kingdom. It would very well clash with the nature dominance over man theme in Animal Kingdom. Cars Land, on the other hand, feels real as a place because it was inspired by Route 66. It's America occupied by Cars, so that's pretty easy to push past. Again I think it's possible it could work (mainly relating to the ecosystems), but it would be a lot harder than getting Pandora to fit, which it does as perfectly as any non-ip would have IMO.