It occurred to me this morning with how Asylum of the Daleks gave us splinter Clara inside a Dalek shell that Moffat is going to retcon that as being foreshadowing the hybrid in the finale and will tie it in somehow to Clara having to die. We are probably going to get some ridiculous and convoluted storyline that ties Everything in Who together.
This is my fanfic speculation of what the finale will be:
Splinter Clara went back to Gallifrey and became a Time Lord, somehow merged with a Dalek to become the Hybrid. This scared the Doctor into running away. The Hybrid survived the Time War and is threatening Gallifrey. The Doctor finds Gallifrey, confronts the Hybrid but cannot defeat it. Davros and the Daleks also learn of the Hybrid and come to Gallifrey to try to get the Hybrid to join them. But, only Clara can stop it since the Hybrid is made up of one of her splinters. Clara somehow merges mind with the Hybrid's mind to convince it to become good since Clara is good but the mind meld process kills Clara. The Hybrid, now has the mind of Clara, feels guilty for what it has done and also realizing the danger that it poses to the universe being part-Dalek, sacrifices itself to save Gallifrey. But before sacrificing itself, the Hybrid speaking as Clara because it has her mind, says a tearful goodbye to the Doctor, telling him how much She/Clara cared for him. Gallifrey is now saved and is able to return to normal space. It is a bitter sweet moment for the Doctor as he has both lost the companion he cared for but has brought his home planet and his people back.
When will that be on, I'd like to watch it.
