Slight change to Yasuo
Make his windwall remove his passive and it's length is determined by how much of his passive is charged. So right now it lasts 4 seconds with an ever growing width. Have it last 5 seconds at full charge and decrease by 1 second per 25% so it'll last 1 second if he has no charge, etc.
The only reason I suggest this is because his passive is a little too strong, not even the crit part of it. The shield nulifies damage. If you use an execute on him like Garen's ult while he has 1 HP and his shield is up and unpopped, he takes no damage from the ult and still has his shield. So turning it into something he has to consume could be really beneficial to his skill ceiling and also counterplay against him. If you pop his shield and he tries to windwall then it's only up for a second, or if he prematurely windwalls then he'll have no shield to completely block 1 attack and up to 500 damage from.