I haven't been following the discussion, and I'm not a raging Who fan, but the Matt Smith season is the first one I watched start-to-finish.
After The Big Bang (Pandorica opens was far better), I wanted to pick up some of the plot threads from the preceding seasons. Since I'm not that fond of Eccleston (I did watch most of his season before anyway), and I've little interest in watching classic Who consecutively (as consecutively as possible, at least) just yet, I started with season 2, and Tennant.
After seeing a little more of River Song in Smith's season, I suspect the impact of Silence in the Library is far deeper now, that I am richer for having watched her stories with Smith and then watched her demise. It really cut me up. When Moffat's good, he's great, especially with forward references, like the crash of the Byzantium.
I must say, I'm seeing a pattern to some of his writing.
There's the trademark phrases; "You've had cowboys in here...", complaining about being old and stupid, and the "It was a clever lie to..." lines.
Then there's the simple everyday things, turned into terrifying plot devices, like blinking or shadows, and occasionally the alteration of someone's life or memory in a tragic way - the memory core in the Library, the cracks in the universe, being instantly ripped back in time...
Maybe I'm reading into that too much, are these recognised "Moffatisms"?
Also, are there any theories (aside from artistic license...) on why River's body disappeared from the interface chair in the core of the Library?