It might be important here to temper expectations. Decision making at that level is rarely based on personal feelings and experiences. Iger didn't just decide to spend $60B on the parks because he came around to the light. Decisions are made after years of researching, hundreds of people working on thousands of analytical reports and powerpoint presentations, and hours upon hours of meetings.
As someone who fully suspected the board/street would never allow another parks chairman to be considered after Chapek, and now facing the possibility I was wrong in that assessment: the only logical conclusion here is that D'Amaro will be promoted because he will more effectively maintain the status quo, and overall, everyone is happy with the current direction of the company.