Don't Cheat on a Good Movie

I heard that Frozen is one of the most popular animated films of all time. Or the most popular animated film?
Now, I loved Frozen, and the music, and Elsa. But it seemed to me like they could have tried harder, and that they cheated on certain parts of it. As if "oh, we'll just skip this and hope that people don't notice." Never do that. People will ALWAYS notice.

The one thing that I kept noticing was the ice, especially during Let it Go. It really doesn't look like ice. It's too flat and glass-like. They made it too neat and tidy. With all their fancy animation stuff, it seems like they could have thought of a much more creative way to animate the ice. Same with melting snowmen.
The hair was similar. After Rapunzel, you'd think thay would have a much stronger grasp on hair. But the two main ladies had their hair braided the whole time, almost pinned to their shoulders. And the scene where Anna wakes up with severe bedhead, her hair looks really strange too. It doesn't look natural.
And Hans's motives confuse me. He sure goes out of his way to help the people he's trying to get rid of. Seems like he could have cut out some of that. And at the beginning, how the heck did he know where to go to run into Anna? It doesn't seem like he could have planned that accident, but more like he just bumped into the opportunity or something (maybe he did, but they made it sound like he knew exactly where Anna would be dancing across the dock, in front of a boat to conveniently fall into).
And Elsa. She never practices her magic. How can she immediately be so skillful with it? To the point of bringing things to life accidentally, and creating palaces of ice.
And then Anna rides off into the snow in her summer dress and doesn't even seem very cold until she falls into the river.
Wolves. Ugh. Stupid wolves. Disney loves throwing evil wolves into everything just to create drama (like in Beauty and the Beast). If I didn't see monster wolves providing convenient danger aspects everywhere, I wouldn't have cared.
Also, Anna doesn't seem to sleep at all for three nights in a row.
And Elsa is stuck in that castle for three days with no food or anything.
And the trolls. Everyone I've talked to says they don't like the trolls. That they don't fit in well, especially the time they're given and the way they're incorporated. True they hint at an interesting troll culture. But aren't the trolls supposed to be "love experts?" And yet they immediately want Anna and Kristoff to get married, without knowing a thing about Anna. That goes against everyhting Kristoff said earlier. And it really seems like the trolls' voices should be unique. They sound too normal.
Also, Olaf's face. Everyone I've talked to that's significantly older than me doesn't liike Olaf's face. I'va adapted to his face, but they still could have done a better job of it.

So, yes. I love Frozen.
But couldn't they have addressed some of this stuff?