So, here’s a thought…
Was there ever an ‘original’ Clara?
The understanding we have now is that Clara was born, grew up, traveled with the Doctor, then created all her echoes in The Name of the Doctor.
What if that original Clara was also created through that action?
I mean, I don’t entirely understand exactly how she echoed throughout history. As far as I remember, there was a shot of a Victorian woman and a baby in the episode… so presumably that means Clara is born to lots of different people, rather than appearing as a 23-year-old woman. (Which is what happened with Scaroth, I think?)
Anyway, what if ‘our’ Clara was also born in this way? If she’s a self-creating paradox person? That’d be… interesting. Although there’s perhaps some narrative problems created.
(And, given that we had a presumably Time Lord Clara, does that mean we can have Claras of other races? Slitheen Clara? And is she always the same? Is there a Clarence Oswald out there? How do the different experiences shape the different echoes? Is one Clara less valid than another, if there was an original Clara? If the echoes are still out there, could we meet one in a future episode? How would Clara Prime deal with meeting an echo? How would the Doctor deal with meeting an echo after Clara Prime has left him?)
I… really rather love the idea of Clara splintering, now that I think about it. There’s a hell of a lot to it, isn’t there?