I'm guessing the change is happening soon- Maelstrom was missing from late fall fastpass+ choices.
I'm actually in favor of a Frozen ride there. It was a wonderful film and I think it would definitely interest people in learning more about Norway/Scandinavia.
Epcot desperately needs new attractions and what is wrong with a blend of fact and fiction? Scottish tourism rose after Brave came out, and Merida is a fictional character. And as long as Epcot is going for some updating, please please please update the ancient CircleVision movies or put something else there- the cinematography is great, but they are boring and the clothing is even more outdated than the Carousel of Progress (But I will always make an exception for that ride out of nostalgia!)
As for other rides, I like Donald's adventures in Mexico, and I like Turtle Talk with Crush, but I wish that the Nemo theming hadn't displaced viewing of real fish- the old ride through the tank used to be incredible!
Epcot has always been my fave park, and I greatly miss Horizons, original Figment, WIM and Kitchen Kabaret. Those rides were a great blend of edutainment, and I would love to see new rides that capture that spirit!!!!