3. The Doctor's Lie About The Gamma Forest
Heres one that when the episode aired I immediately jumped on as key foreshadowing, but others seemed to miss (there were much bigger reveals to be dealing with I guess). Throughout A Good Man Goes To War, the dwellers of the Gamma forest were a unexpectedly key presence. River uses them as an example of the Doctors increasingly war like ways and its through their simplistic language that Melody Ponds true identity is revealed. But that's not all. The Battle of Demons Run not only leaves Strrax dead (a pretty major plot hole given his recurring appearance), but claims the life of the one Gamma resident we actually met, Lorna. As she dies she asks the Doctor if he remembers her and he painfully says yes. The look on Matt Smiths face, coupled with his heartbreaking "Who was she?" says it all; he didn't remember Lorna because he was yet to meet her. There was also a suggestion that, as he's known as a great warrior to them, he line about them running was the point when even Lorna knew he was lying. The way the script leaned so heavily on it hinted this was going to be a big event in his future, but there was nary a mention of this after the episode. It may have been that the Doctor had been going so off the rails that hed begun to forget adventures, but that strikes as a bit too much.
Potential Solution: It wasn't important after all.