This bit really seemed to hammer it home (at least for me):
... these women [Rose, Martha, and Donna] were individuals, full-blooded characters with back-stories, motivations and quirks entirely their own. They were people, whom no one could ever confuse one for the other.
On the other hand, who was Amy Pond?
Er ... she was hot?
And who is Clara Oswald? Well, she's hot, too, but in a more coquettish sort of way. And, er ... that's it.
Take any of the Moffat-era stories, swap Amy for Clara, Clara for Amy, and what changes? Nothing, nothing at all.
Truest of true stories. Amy and Clara are not much more than set dressing, and I've said it before that we don't really know Clara at all (even if 11 might have gotten to know her a bit during adventures that we didn't see).
And also, the Trenzalore paradox ... yes. This. There is no way that any of series 7 can make sense if we take away the fact that he didn't actually die on Trenzalore ... unless the death happens sometime later, but I don't think that it will. I have the feeling that Moffat isn't going to go back to Trenzalore, and is going to try and timey-whimey handwave us into forgetting that Trenzalore happened, and that since there was no way that Clara could have gone into the time stream without there being a time stream there in the first place, she wouldn't have been able to become "The Impossible Girl."