While there will likely never be a perfect choice for CEO, one with extensive training in Parks, film, tv, and other venues, who would make a good leader for the company? I see a lot of complaints about who is leading the company, but never suggestions for who should?
Within Disney, I believe the best possible option would be Peter Rice. He may not have park experience, but he has led 20th Television to considerable success with shows like Modern Family, This is Us, and several others. People in Hollywood know Rice, they like him, and he has extensive years of working with talent. Perhaps he could elevate Josh D'Amaro to the role of President of the company so he can be the Parks and Resorts guy, whereas Peter Rice runs the business side.
Outside the company, I've always felt that Spielberg would have made a great leader for Disney. He almost was. Back in the mid-80s, Disney actually reached out to the likes of Spielberg, George Lucas, and Jim Henson to see about running the company. They said no, but they all recommended Michael Eisner which is partly how he became CEO.