* Everyone thinks that Billy is a little unstrung.
* I know TLA is Three-Letter-Abbreviation but what could it really be a Three-Letter-Agency? As in the CIA, the FBI, MI5, the BFI and the BBC?
I had another but the brane is eating my short-term memory. Aha!
* If the creator team had stated it better and more succulent (auto-correct!) that The Silence and friends needed a Time Active individual to power their paradox-machine/killer-spacesuit... does it follow that exposure to the time vortex (the weird shiny place) change you into Something Else - i.e. River and her Time-Lord-Ish abilities - then, it follows...
* the Gallifreyans went into the vortex, but did they ever get out? Stay with me on this one: The Gallifreyans went into the vortex, but Time Lords came back. So the Gallifreyans never returned -- they were lost as soon as they went through the Eye Of Harmony. They just switched into Something Else - they were Then and they weren't Now and Will Remain that way Forever. Not in a biological process, not genes and mitochondria, not some strange Jail Break into pre-existing atavistic back alleys -- Just gone. Just Something Else. Snap!