The nerf fiora movement.
Right now, we have been forced to deal with an overpowered fiora ever since patch 5.15. People kept banning her in draft/ranked mode, but there are people who play blind/teambuilder who had to suffer this abomination. Even at the competitive level fiora was shown to be overpowered. Despite this, riot refuses to nerf her.
The core problem is her %max hp true damage and her extremely low cd mobility. With 40% cdr, her dash has a less than 2 second cooldown if she strikes a unit, which she is more than capable of doing. Her %max hp true damage allows her to ignore building armor pen and still do massive dps and burst. The standard fiora built is
gives her around 250 bonus ad with runes and masteries, and this can be increased with drag/baron buff. This makes each vital proc do around 15% max hp true damage, which means it is impossible to counterbuild her. Not to mention she has over 3k hp, 150 armor, and 150 mr, which means she takes a while to take down when combined with her ridiculous sustain given by her passive and ulti. Her low cd q means she is impossible to kite even wiith heavy cc. Let's not forget to mention her w, which allows to not only block a cc, it makes her cc the enemy as well.
We should continue to make nerf fiora threads in the hopes of riot realizing that the community is sick with having this overloaded champion shoved down our throats. Maybe then fiora will get meaningful nerfs.
Here are some good suggested nerfs. Make her passive do physical damage instead of true damage. Increase her q base cooldown. Make her vitals last less amounts of time, to lower the amount of opportunity she has to strike it.