Said this in another thread, sorry to repeat it here:
The biggest problem that I see with turning Maelstrom into Frozen - the capacity is about 900 per hour.
The ride is short, and it has a fairly low capacity. That's a problem that cannot be overcome if they don't do some combination of these four things : 1) entirely change the load area, 2) completely re-imagine the ride system, 3) expand the footprint of the ride building to make the ride longer, 4) expand the hours for World Showcase (or at least Norway) beyond 10 hours per day.
All but one of those is not an easy fix.
If 60,000 people a day show up to see the new ride, about 51,000 people are going to be sorely disappointed when they cannot get on the new ride because 10 hours times 900 per hour is 9,000 people per day.
The most popular animated film in 20 years (possibly ever), the 5th biggest grossing film of all time, and the plan is to refurb a small attraction that lets 9,000 per day in?