Riot's feelings on Azir

I'll be honest, I'm really conflicted about the state of Azir right now I feel like I should be stronger, because it really does take 30-40 minutes before I am a proper threat that cannot be ignored, but in the games where I DO reach that point I suddenly become ludicrously strong. And even were he to be buffed, I'm honestly not 100% sure how. Q damage would be nice, but that's why he was OP before W is overloaded as it is E the knockup return would be nice, but you guys dont revert changes, so theres not much I can really think of barring number buffs (which I don't think actually solves the issues) R The ability is already strong as is, and is simply one of those ultimates that can decide a game, so im not sure changing that is any good either

One thing I would like to see though is some clear definition for minion aggro. W attacks draw aggro, suggesting it's an on attack mechanic, Yet this is disproved by Ezreal's Q, which draws aggro due to "applying on hit effects", suggesting aggro is an on-hit effect, which is in turn disproved by azir's W as they don not apply on hits.

But i digress, what are your thoughts on Azir riot? Is he fine as is? Are the AP items the problem rather than himself? Does he need a buff? I'm pretty confused at the moment @_@