The strongest concept I've heard is "Muppets American History" to replace Hall of Presidents. That checks a lot of boxes:
- It's an IP Disney owns
- Half the country hates HOP at any given moment in time
- HOP is the lowest-rated attraction in WDW for several guest demographics
- The current HOP really has no "here's where we go from here" opportunities. They're not going to turn it into a musical. It's just not a subject that a lot of people care about enough to see.
Plus, the Muppets are viewed as largely apolitical by most Americans. They could tell the good parts and the bad parts (and avoid others entirely) in a way that most people would enjoy.