Ah yes, the plotholes...
I know this is a show where we are supposed to ignore them, but it is also a show targeted primarily at children and nerds. Nerds who will notice and be bothered by everything you get wrong.
The thing is, we do actually have a tolerance for this kind of thing, because no story involving timetravel will ever work out perfectly. But at least make an effort!
I guess that is my biggest complaint with the last two or three seasons. It feels like they don't even make an effort to think things through anymore.
also:
The statue of liberty can walk unseen across half of New York?
That is not scary. It is just dumb. They even mention how New York is the city that never sleeps. Even if that thing managed to somehow take a step or two unobserved, the resulting panic and news coverage would freeze it right in place...
But I liked the angel smiling! That was actually creepy. But apart from that they seem to have missed the point of the angels entirely by now. It really isn't that hard to grasp what makes them scary, how could they miss it so badly?
As far as the emotional component went, I quite liked it. I like the Ponds, I even like River. But I found the scene of them jumping off the roof the be far more climactic then the graveyard scene, but I get why they don't want them to go out in straight up suicide, thats ok.
I know many people dissagree, but I would like to see more of River. We keep hearing how much she is in love with him, but we never really see them have an actual relationship. We saw a bit of that now, but not nearly enough for me to actually believe in them in any meaningfull way. Relationships should be developed just much as characters, and I'm still missing that here.
And as for the final paradox, I get it. Time can be rewritten so long as you have not read it. So let's say history books don't count, for some reason, but a gravestone does. The gravestone does not say anything! Except that there is a gravestone with the Ponds name on it. It does not say how they died. Or when. Only how old they where. So if the doctor goes back in time, collects the Ponds, sets up the gravestone (as a fake) they could all live happily ever after. And that is ignoring the fact that "Amelia and Rory Williams" are names that probably occur more than once in the world.
I liked the episode, actually. I liked the emotional stuff, especially all the domestic foreshadowing at the start, but this stuff is really starting to bug me. Not just because it makes no sense, but because I feel that there hasn't been enough effort of thought put into it.