Couple more things that interest me...
Yes, things changed when it slipped story arcs. <snip> It meant that the TARDIS was no longer trying to warn the Doctor about the events of The Big Bang, or how he could get out of it.
In almost all the drafts of the script until we reached shooting... <snip> it was very clear that House had absolutely survived.
I had thought right from the first moment House spoke, that it was the same voice from the end of "The Pandorica Opens," that says Silence Will Fall as the Tardis is exploding around River.
And if "The Doctor's Wife" had taken place before "The Pandorica Opens," I think everyone would have assumed (and for all we know, correctly) that the not-dead House was the one behind the entire Pandorica plan, somehow tricking all the Doctor's enemies into trapping him in the box so that he could get hold of the Tardis again and blow it up, thus creating the cracks and the End of the Universe (be it out of revenge against the Doctor, or annoyance that there were no more Tardises to eat, or just boredom).
Was that in fact the original meaning of "The Silence" - a much more prosaic meaning that did in fact refer to the End of the Universe as we assumed it to be at the time? And that it would have been House as the man behind the curtain? That seems a bit... dull.
But since "The Doctor's Wife"
didn't take place before "The Pandorica Opens," we now still have no explanation for the Tardis explosion. Are we to assume that the voice in TPO was indeed a not-dead-after-all House, who travelled back in time and created another wibbly-wobbly timey-wimey ball of bollocks in proactive revenge against the Doctor? And if so, how does that mesh with what we now know The Silence to be?