I'm from the future, I need to tell you something about Yasuo nerfs quick before it's too late!
THIS IS NOT A RANT, BUT A WARNING/SUGGESTION/DISCUSSION TYPE OF THREAD
The current nerfs won't do much, Yasuo players will now start building this build:

(in no particular order)
His ult nerfs aren't going to affect him much, as he only need those 2 crit items to make the ult nerfs unnoticable. Not to mention the ult gives Bonus Armor Penetration, which means it's rather useless early anyways unless he's dueling a Malphite.
I'll tell you what he needs, he either needs a lot of his base stats and armor/health scalings chunked down, or
needs to be removed. I vote for the second one. I actually had a thought the other they, that what if he got half the armor from items as he gets double the crit instead? But that sounds like a stupid idea now that I think about it, but I thought it still was worth a mention.
Another change to his kit that he DESPERATELY needs, is his W. I have been playing lots of Draven/Adc's lately, and I gotta say that his Windwall is obnoxious and completely stupid and toxic. Whenever I play Draven I instantly lose my axes when he throws his Windwall, counterplay? Well, I can't ult either as Draven now, so I have to go AROUND the Windwall, oh, his windwall will block my 2nd part of ult although the wall was facing the wrong way? Hm, Ashe then? I press ult, he uses W. Well there goes my ult, even though the Yasuo is clearly a bad meta slave, and used his ult backwards by accident?? I suggest that you either:
- Make his Windwall use his flow so he won't have a SHIELD on top of that Wall.
- Make it only block projectiles from the front side.
- Make it have a longer cast time and not land directly on top of Yasuo. That's it folks, have a good day/night, and I hope you read & considered my post =).