Her hairline is high and her head looks bald. Her nose is big like a caricature of a black person. She has no eyebrows. This feels like a rushed job and the team needs to fix this pronto. Her base skin is better than this.
I thought Lucio from OW escaped when I saw her. She looks terrible in the trailer and they did her no justice.
I get what you are saying with the hair and the eyebrows. All of the other characters seemed like carefully and lovingly crafted where senna looked very rushed here. However, I don't think the issue is having a big nose because there is nothing wrong with having a big nose. All noses are beautiful, big or small. I just think the problem is that on this model it doesn't look like it fit into her face its just kinda... on it.... you know? It looks how a fake nose would look on a real person if that makes any sense.
