So, I too am impressed with the AAs and the general flow of the ride. I love that they didn't go for a lame "book report" and firm storyline, but rather did more of an "experience" where you visit Arendelle and are entertained by it. I like that it doesn't really detract from the pavilion being Norway.
That said, I would go along with the criticism that some of the scenes are quite sparse. Perhaps that's taking a strong cue from the film, but it makes things look under decorated. In particular the scene with Olaf ice skating followed by Anna & Kristoff -- there needs to be some more background "stuff" to fill it out.
Is Snowball supposed to move more? His limited motion is surprising.
That said, I loved Maelstrom and no matter how nice this is, I will probably be sad riding it for that reason. I wish they would have kept/updated that ride and built a Frozen ride elsewhere (personally, I would have been fine with them using the Summerhus space for a Frozen ride in addition to Maelstrom).
Edit: I will add that not everything needs to be a E-ticket and I think this ride fills a needed niche for Epcot. It's a better version of the smallish FL dark rides that Disney is know for.