The Azir nerfs on PBE aren't fixing his current issues.
I understand that right now Azir is strong, but the nerfs on PBE just seem not only misdirected but also harsh.
Azir Shurima's Legacy ( Passive ) No longer grants Will of the Emperor (attack speed boost)
Arise! ( W ) Passive: Gains 10/20/30/40/50% attack speed.
Active: Azir summons a Sand Soldier for 9 seconds. When Azir attacks an enemy in a soldier's range, the soldier attacks instead of Azir, dealing 50/60/70/80/90 (+0.6 AP) magic damage to enemies in a line. If multiple soldiers strike the same target, each soldier after the first deals 25% damage. Soldiers attack even if Azir himself isn't in basic attack range.
Azir can store up to 2 Sand Soldiers at a time. A new soldier becomes available every 12/12/11/10/9 seconds. Moving too far away from soldiers deactivates them. Sand Soldiers expire twice as fast when near an enemy turret.
Azir can expend a soldier to damage an enemy turret by summoning it on top of the turret. This deals 60/80/100/120/140 (+0.4 AP) magic damage to the turret.
Shifting Sands ( E ) No longer knocks up enemies or grants shield.
Essentially what these changes do is gut the damage of his soldiers before you start putting additional points into them, and the base damage remains nerfed heavily late-game. If they want to lower his soldier's base damage, at least give it a slightly bigger AP ratio (70% would make up for it late-game once you have 700+ AP)
Additionally, the knock up on Azir's E was very useful in setting up his R. I could do without the shield on it, but the knock-up (a 0.5 second knock-up mind you) gives just enough time to secure kills or toss somebody around.
Azir's whole problem is his strong burst on top of sustained damage from soldiers, if anything his Q should be receiving additional damage nerfs. They could completely remove the structure damage on Azir's W and I would be fine with that. Just don't nerf his DPS and play-making potential.
Update: For some reason the base damage still scales with level and not rank in W, after playing with it. I guess that's good. Still, the nerf to his E feels bad.