Riot, you should take a thematic look at Fiora
I'll sum up the reason why with a few quick GIFs:
This is how Fiora should play and feel:
This is how it should feel to play against Fiora:
This is how Fiora actually plays:
When you try to fight people who are actually strong at dueling When you teamfight instead of 1v1ing
This is what it feels like when the other team picks Fiora:
TL;DR if Fiora's gonna be the "Grand Duelist", her primary strength should be dueling and not ulting teamfights
EDIT: Guys I just had Sword Art Online on the brain. Fiora doesn't actually have to play like an SAO character (although it would still be totally badass if she did); she should just have her focused pushed to being a mechanically deep 1v1 duelist as opposed to a melee carry with a teamfight-oriented ult.