This definitely explains why the removed the towerpart of Azir's Passive ASAP.
Also, it doesn't hurt to raise Awareness - we can't possibly know if Stashu would've thought about it considering the amount of attention dominion gets.
It would actually be pretty cool if Azir could cast his passive on allied controlled points. Have that create his tower that needs to be destroyed before the point can be captured. That would actually help a ton in giving him a unique identity for Dominion.
But that would require effort, of course. And if we've learned anything of late about Riot and Dominion, it's that even half-assing it seems to be asking for too much.