I remember one of the
insiders bringing up this point as well before the official announcement. Based on that I had actually expected the outside of the Lion King
land to be even more cartoony than what they have shown so far. Considering Rafiki and gang already are at home in Adventureland, I don't think it would have been a huge dealbreaker compared to IPs like Coco in Frontierland, etc.
Personally I would have preferred a Jungle Book Splash Mt. in Adventureland instead - character designs by Marc Davies (who also did characters for Jungle Cruise, Pirates, etc.) as well as music by the Sherman brothers. Mowgli would be the human explorer character while the attraction would be the perfect DLP replacement for the Jungle Cruise. I guess that
cruise has sailed now.