Definitely one of the better Disney flicks of the last 25 years. There were a lot of songs (more than Tangled had) but they definitely had much better and catchier melodies. The plot was definitely a great play on the "classic Disney tropes", and while certain parts may leave some wanting, I believe what the film does do different is very important to what makes it a very memorable experience (I won't go into it at risk of spoilerz n' such).
Anna was lovely (and a darling goofball), Elsa was taciturn and complicated, Hans plays the Prince Charming
role brilliantly, and Kristoff...well, I'd argue he was a weaker link, but played his part well too (ie; he's no Flynn Rider, but we can't have the same type of character twice now can we?). Olaf the snowman was probably my favourite; he's the epitome of how simple humor can work perfectly thanks to stellar comedic timing and, literally, just a "great personality" that makes any moment with him well-spent. How can you hate a clueless magical Snowman who just wants to see the Summer sun?
If I could say: Get rid of the song with the trolls; it would have been better to just flesh them out (because they were interesting if not terribly underdeveloped) or flesh out how Kristoff knows about them than have them sing what was the film's worst tune (it's also countered by the most abrupt mood whip-lash that happens immediately
after their song ends). If you're gonna make a song about "love", then the peeps at Disney should have remembered that they've done waaaay better
Like I said though, the rest of the tracks and the plot stand out and compare to even Disney's best efforts. The emotional moments will tug at your heart, and Disney had managed to hit Pixar-levels of drama (at least back when Pixar was good because, IMO, they have reeeallly taken a dip in recent years). Totally recommended if you're still a kid at heart and can stomach a few show tunes. It's also probably one of the most visually impressive CGI films I've ever seen.