I have to admit I am impressed by the careful observations of several commentators on this page. There is a skill in seeing what is before your eyes and also in squaring off what you see as sensible pieces of a greater story.
Here follows several points that I think are worth dwelling on (drawn from very different places or deduced from other known facts):
1) The Pandorica Opens painting does appear to have two exploding TARDISes
2) The Day of the Doctor special deliberately denied us a glimpse of the new face of the regenerating (Hurt) Doctor
3) The manipulations of the Silence are very broad and include abduction and programming of children to carry out acts to achieve the ends of that movement
4) The 11th Doctor no matter how much he tries to put his life in order (e.g. managing to save rather than destroy Gallifrey) remains troubled by his past and (up until now) has been “running from it”
5) Clara (in the just released trailer to the 2013 Christmas special) demands of someone (some group, something) that they must help the Doctor to “change the future”. Who would have the power to do this and might be reasoned with to do so?
Trenzalore specific points:
6) A lot of people believe the Doctor will (be forced to) answer a question. Why would a triumphant Doctor do that? Why would a defeated Doctor do that, if it makes the situation worse (as it probably would)?
7) Are there not reasons that would cause the Doctor himself to ask a question with a potentially deeply shattering answer?
8) The clocks in Trenzalore show the midnight hour. Why?
Regeneration specific points:
9) Within the life of one Timelord how can there be any more than 12 regenerations? Wouldn’t that just be a cheat and destroy all credibility of the Doctor’s story? So, how can there be another regeneration without cheating when we have seen each regeneration for ourselves?
