I actually would love to see Soul incorporated but I'm kind of thinking Coco might have that spot for a Land of the Dead/Departed world. However perhaps Joe himself could still be incorporated into the game through his love of jazz. Princess and the Frog also heavily featured that genre of music so perhaps we could get both IPs together. Tiana opens a restaurant in Radiant Garden with Joe and Naveen as her entertainment/musical performances. While visiting them, you can perform mini-games with each character: Cooking with Tiana, Playing instruments with Joe, and singing with Naveen. Throw in Dr. Facilier as a special world boss and we got some fun stuff.