I'm glad they did something with her ponytail, curls seem to be popular so far. As for the dress, I love it, but it's rather....bold for them to make the cloth and skirt length so long and flowy. They could've shortened it a little so it won't be a clipping disaster, but I guess that's what the rips are for, besides costume design.
She looks good. For exampe in these smaller gifs. But if you take a closer look at her, her character model is still kinda low polygon. I doubt she exceeds for example Nyotengu's polygon count (comparable because of her flowing hair and kimono). For a PS4 game that's still kinda lame... But it looks as if Nina is one of the few characters of Tekken 7 that actually got a complete character model overhaul. Her face looks nothing like before. Much prettier also.
....Am I seeing things, or do her shoulders seem less broad?