They would have to tear the buildings in Norway down,and rebuild them, to have a hope of getting the pavilion ready to handle the kinds of crowds A&E are getting now. And by the time they finish, it's possible they won't have those crowds anymore.
Could be the plans are to eventually move them there with a smaller pavilion and Frozen themes but it is for the future when the crowds are more normal. I'm sure Disney intends to have the girls there for many years to come. As you say, why build a massive pavilion and completely rearrange everything when it won't be needed (that size of a structure) in the future. That isn't to say though that 5 years from now an A&E meet and greet in Norway wouldn't make sense.




