You know, I never really liked Aiko 4. I was more of an Aiko 3 person. Still, I had to notice that despite how much it seems to me that A4 would have made a great looking Alita: Battle Angel, with those big eyes and all, almost no one has depicted her as such. That was the nice thing about A3 though, you could make her look like almost anything. I can't say that about A4.