I took "MongoGate" (sorry, I just fell in love with that term) as an example of what happens when overly positive expectations hit the hard ground. Removing the hype from NoSQL ("it's innovative", "it scales", "the cool guys use it", yada yada) is what I like to do.

I surely do not uncover any secret there. But I haven't stumbled upon a "what NoSQL lacks" blog post recently either. You can read my post in many ways, but the latter one is actually one possible way imho.