I didn't expect it. Since both Amy and River reacted to the Silence with pain, I thought both were pregnant. It made much more sense for me to have the child be River and the Doctors, if it could regenerate.
The whole idea that exposure to a time vortex causes a baby to have the ability to regenerate is ludicrous. Beyond silly sci fi show standards, and way below what I expect from Moff. He's a good writer who is known for having a strong sci-fi meter, he has the sense to write a story is clever and entertaining. RTD was a good writer too, but he seemed to think that clever was the opposite of entertaining and didn't like to use it if he could have big sfx instead. (His low sfx budget eps, like Midnight, were brilliant)
Next we'll learn that eating tomatoes causes us to grow seeds in our cells.
That all being said, I still really enjoyed the ep.
River not knowing Rory when she was among the Romans works because he was erased from time. Amy didn't know him either.
I loved the whole bit with the leaf having River Song on it for Melody Pond. The tardis tried to explain it to Rory (worried about her 'pretty one's fate?) in the Doctor's wife, that the only water in the forest is a river.
And now the Doctor is off to try and find poor Melody, whose being kept and experimented on by the Silence, as a weapon against him. I can imagine that the eye patch nanny has an image of the Silence under her patch, so she knows about them. That she needed to travel back to a time before humanity was ordered to start their war on them to get them to raise Melody. That the Silence are the perfect people to hide her as even the Doctor doesn't know they exist or that he started their downfall - and they can program Melody to assassinate whoever they want, and she wont remember why or easily stop herself.
And soon the Silence would be overthrown, so the pirate nanny wont have to worry about them interfering in her goals too much - and yet, the Silence must have been suspicious, to order Amy-G to reveal any plans her flesh self had been programmed not to tell, like that she was pregnant (what he must know and must not ever know).
Rory was fine in his centurion outfit, great in both his attitude and actions as he confronts everybody and is merciless in tracking down hs wife and child. And cries when he has them in his arms. And then that scene, in his soldier outfit, as he tries to comfort the Sontaran who found that dying in combat wasn't as much fun as he thought. Who tells Rory he's not a warrior, he's a nurse. I love those little poetic vignettes.
And while I always thought River killed the Doctor, when she killed a good man, the best man she ever knew, now I think she killed Rory. Which is really too bad - I'm quite fond of Rory. If she killed the Doctor then I wouldn't worry. He always turns up somehow. Rory ... I don't know if he can be so easily resurrected again, or if his daughter would be in prison willingly, if he were alive.
The teaser after the credits gives me hope tho.
As to why you were the first to put up the thread - well, it hasn't aired in NA yet. That's all.
As for it being too easy - that was the point. It was a trap to make him think he'd won, fool him with an easy victory. Pirate nanny made it easy, to taunt him about how simple it was to trick him. All so folks would say he'd risen higher than he'd ever been.
Now comes the fall.