Suggestion about some Fiora changes

Fiora is in a balanced state right now, according to her numbers, but she still has some problems that needs to be addressed. Hashinshin talked about it on this video:

https://www.youtube.com/watch?v=EPs67Fqj2GY

This video was recorded before patch 9.8, when Fiora got some buffs. As always, Hashinshin exaggerates a lot when criticising something, but some of the things he said are very true even after her buffs:

• Fiora is not good at teamfights, so most of the times she has to splitpush;
• But her splitpushing is mediocre because, while she has a great 1v1, she has mana problems mid/late game and can't take turrets very fast;

So, I would like to make a suggestion about some small Fiora changes that would enable her to do her job better, while keeping her balanced:

• Revert the W damage buff that she received in patch 9.8;
• In exchange, give her one of these two;

1. A mana regeneration buff mid/late game;

or

2. A more interesting idea, make her Ultimate healing zone also recover mana. That would make her splitpushing, and even her teamfighting, a little better and would reward good Fiora players.

The idea of these changes is to reduce her early game damage a bit, giving her more counterplay in lane, and make her mid/late game better not by adding damage, but by enabling her to pressure the map more (which is her goal);

Since those are small changes and they don't aim to nerf or buff her, just to make a power shift, she should still be balanced while being more able to do her job.

Thanks for reading!