Having watched again, particularly considering the final five minutes, I feel more certainty regarding Dolores and the 'answer' being to accept a return to who she was.
Ford's recollection that "then I realised someone was paying attention, someone who could change" clearly points to Dolores and her capacity to gain near-consciousness the first time around when Arnold tries to stop Ford opening the park. His subsequent "so I began to compose a new story for them" seems a reference to the start of the 'new narrative' which, as several people have pointed out, has been the 35-year effort to allow the hosts to recognise themselves and gain sentience. The two lines of his speech which seal the deal follow: "It begins in a time of war, with a villain named Wyatt" -- it 'began' all that time ago with Dolores as Wyatt killing all the hosts and Arnold, and the present 'new narrative' version (which is technically what Ford is referring to when speaking of "It") 'begins' with Dolores becoming her previous self again and doing the same thing. The tie between the two is confirmed in his next line: "And a killing, this time by choice" -- because Dolores knows now, of her own accord, who she must become: blue dress Dolores.
I think the idea that consciousness doesn't actually equate to freedom for any of the hosts, should they ever gain it, is foregrounded in Maeve's line upon waking Bernard, too: "Here you are finally awake, and your only wish is to go back to sleep." Dolores could be forgiven for feeling the same way once she realises what she has to do and who she has to become.
Interestingly, I think the key line which locks all of this in comes much earlier, during the exchange with MiB -- Dolores says, whilst standing next to her grave, "It ends in a place I've never been, a thing I'll never do." The maze thus elides consciousness and death, which reflects the manner in which every successive attempt to get closer has always ended in the character dying. See Dolores with Arnold, Teddy with Armistice, and any number of others.
So the really interesting point is that this leaves one question unanswered. Once the camera stops rolling, does Dolores complete the reenactment with exact accuracy by shooting herself?
2018 is so far away :cry:
(And apologies for thread spam, but I can't get this episode out of my head)