I have some comments about new Fiora.
Firstly, the new splash is a step down. The face is too long and her expression looks like she's trying too hard to look serious. Her face and expression on her old splash looks much better, smile and everything.
I do like the ingame model a bit better. A bit...except the face...
Secondly, what would happen to her build? If anything? I can't theorycraft well yet.
Thirdly, her kit is a step down, I understand it's for the "duelist theme" but she won't be as God as she was, and her ult is useless in a teamfight.