I was surprised that Maeve saved herself. Ford certainly made a mistake when he didn't made sure that her body was destroyed while he was still in the house. But her resurrection speaks also about William transformation to the Man in Black and his invulnerability. Which leaves me question what did he really tried to achieve the invulnerability project prototype, when he's already living inside an android body?
Thing is William's ageing fits with him being a human, but riding through the wasteland to the Valley Beyond with six shots in guts makes him a host. Not just the devil in the play. Maybe that makes Dolores an Angel, and the Wrath of the Hosts a biblical tale. I'm not sure Nolan and Joy has woven in those things as their involvement only makes this play grandiose.
If you look closely metal, not bones at the end of those severed fingers. It makes me wonder about Ford as it makes him the host creator, the sole human who died to give the Hosts freedom and him eternal life as the Ghost in the Machine. Did he came up from the Valley Beyond to work on the invulnerability problem and William was his side project to keep the resources flowing as every life was captured and stored as soon as the person entered the park?
Did Ford simply knock him out, rip the needed info from William's data and install him into a custom body that made him the devil in the play? And when did it happen, because William made a child?
"The greatest trick Devil made was the one that made people to believe he wasn't real!"
Oh, the irony how that line has been turned around in Nolan's and Joy's play. Pure brilliance.
The system told Bernard and Dolores that there was original around 10200 souls and that they were on a trip to the new world. I know it's crazy to think that the Parks were created on top of a seedship, destined to some distant off-world.
It also told Bernard that it studied their code and that human only can do the best with their programming. If the trip to the stars take forever and the system transporting them is capable of keeping the stored humans alive in the special host bodies, it might just work in a way that allows to keep us from going crazy at the end. In similar way the system was working in the Matrix.
This is just a theory as the story can still work on Earth, but why they gave us the numbers. How does this story go forward?