I am picturing a park where we start in the middle, a fully enclosed domed building with cool projections on the ceiling, places to sit and such. We are told that we are setting off on a journey of exploration and discovery, inside the dome there are 4 gates each leading to a different world, The World of Monsters, The World of Magic, what have you. Each world would have it's own aesthetic and would contain a lot of IPs that are only deserving of A ride, or A show, or A restaurant, etc, and then in the back of each World is a single-IP Land in the Diagon Alley, Hogsmede mold, fully immersive with it's own look and sound separate from, but not a million miles away from, the rest of the World. These Lands would each have a marquee ride as well as a few smaller attractions, shops, and restaurants.
The Lands would make up a lot of the marketing but it's the freedom of the Worlds that could keep it fresh. For it's first decade Islands of Adventure didn't change much, there are a lot of business reasons for that but as was shown when they finally did add stuff, the strong level of theming didn't help. They just about got away with adding Hogsmede, even if it meant the slow death of one of the parks most famous rides, but Kong Skull Island, much as I love it, is an incredibly awkward fit. This feels like it could split the difference of the freedom of Studios' Generic Cities with Islands immersive theming.