I think it would have been better if the expressions of the characters were a little bit more developed like in anime.
アニメ anime/Japanese animation
のように like
もう少し a little bit more
表情 expressions
豊か developed (この場合)
いいのになぁ I think it would have been better/I think it would have been good
「アニメのライオンキングは、動物達の表情が豊かでした。しかし、実写のライオンキングは動物達の表情がアニメのように豊かではありませんでした」The animals in the animated Lion King were very expressive, but the animals in the live-action Lion King were not as expressive as in most animations で表現できます。
参考になれば幸いです。