Why does the majority believe that Frozen will raze the Norway pavilion? TDO can keep the entire attraction set in Norway with a simple character overlay. Take a look at my Armchair Imagineering. The only location that is fictional IP is Elsa's Ice Palace, which by canon, was built instantly using magic and can absolutely be moved to Norway (Maybe Elsa bequeaths the throne of Arendale to Anna and Kristoff, leaving her free to move her icy abode anywhere she wants.).
This way, Norway and Maelstrom (to an extant) can remain intact, maintaining the general nature of the pavilion.