Blitz new ult
So since you're finally doing something about those can you do something about 
windwall basically being the best defensive ability in the game? For reference:
Hardwire (R) Renamed from Static Field [Unsure if intended!] Cooldown changed from 60/45/30 to 90/60/30 [New] Active effect destroys shields on affected enemies [New] Active effect clears movement-impairing effects on Blitzcrank
The spellshield on 
and 
have very long CD's and only let you use it on one ability. Balance issues arise when you try to push something that broken even further, then you get Fiora's parry. Blocking everything in that short span of time (Not gonna go into detail about how stupid that ability is because I hate Fiora so i'll be biased) Now imagine taking a spellshield that works on autos and making it the size of a lane that last too freaking long and blocks MULTIPLE abilities.
My suggestions for this ability would be to
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Make it so it only blocks the part of the ability that touches it. So if say Nami ults it and only the tip of the wave hits it then that part is cut off but the rest isn't. This will still let it keep its power but make it so Yasuo's can't just throw it out anywhere and be rewarded. Yasuo is supposed to be a high skill champ so make it so and stop rewarding him for bad plays
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Give windwall a health bar that depletes similar to zyra's plants or heimers turrets, making it instantly fade away on ultimate abilities that it blocks. Again, it doesn't remove the power from windwall allowing it to block things like intended but it also makes it so they can't just sit on it and block everything and have a risk to camping it and trying to get free trades
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Instead of making it nullify everything make it reduce damage by a large amount even something as crazy as 80-90% at max rank. (even 100% at max so it's the same as live but makes it so later in the game he's still a hypercarry but early-mid game he's weak like intended) It makes more since then just making abilities vanish. When it comes to something like Nami's ult which is a tidal wave. A strong enough gust of wind would likely lessen the damage the wave would do rather than making it vanish from existance
Whatever happens something needs to because this ability is single handedly the most busted ability in the game
