Wind Wall should work like Yorick's Dark Procession

Yasuo's Wind Wall last 3.75 seconds and blocks all projectiles (and a few other questionable things labelled as "projectiles" - but that discussion is for another day).

Yorick's Dark Procession last 4 seconds, but a player has the ability to attack their way out of it.

Yasuo's ability to throw up a wall that blocks all projectiles, and dash his way to either side of that wall gives him the capability to nullify all ranged attacks for 3.75 seconds, a significant amount of time. I think after the windwall absorbs a certain number of attacks, it should disappear, much like Yorick's Dark Procession.

This way, Yasuo can still stop projectiles and use it as counterplay to 2 or 3 major projectiles (Syndra ult, cait ult etc as some examples), but it also requires him to actually think about when to use it. If he uses it too early, an enemy could take it down with autos and get those key projectiles off.