First thing to notice is, was, the scenery. The cinematography was just awesome. I love how the colors makes the whole movie so anime-ish.

Second was the CG (computer graphics) used. It gave justice to how I imagined it would be. It may not be the best but it did the job for me. It was not half baked.

For me the characters portrayal was also on point. I was able to watch the anime and I felt that they tried their very best to stick to the soul of the anime. Until now I am astounded how they are able to make Al's character come alive. And the Nina chimera, it was heartbreaking but good. If you weren't touched, I don't know about you. I also liked how the villains are very close to how it was in the anime.

And just to clarify the WIG issue:
The hair is not a wig, it was an unruly hair extension.