As the title suggests, this is chapter will be going over my concept for a ending.
I don't know how, but Void Streak would have eventually ended up in the service of the storm king. She would have been his right-hand pony, much like Tempest was in the Canon timeline. By yet another unknown series of events, she would have ended up being betrayed by him, and sent into his mines. She would, once again, by unknown circumstances, she up leading a slave rebellion al-la Vorkuta in COD Black ops. She and the escaped slaves would have found a city belonging to one of the ancient pony tribes, pre-First hearths warming. During a harsh winter, Luna contacts Void. She informs her of events in Equestria. In addition, you would have found out that the reason Celestia did what she did was Queen Chrysilyis manipulating her. Eventually, after becoming a thorn in his side, the storm king finds and attacks them. During the ensuing battle, Void would have ascended to Alicornhood. After the storm kings death and the routing of his forces, Void would eventually begin a conquest of the dead storm kings territories. Eventually, she would come to rule the Southlands, at the head of what I had planned called the Pryhian Federation.
As you can see, it was a bit of a mess. I had hoped it would just come to me, but I just didn't. As I said, at some point I may attempt a re-write or re-work the concept a little bit.