Okay, so first thought I had about this episode is the visible different look, where there is even quite a bit of front projection, I think. There is definitely an exchange between 'throw money at it' versus 'less money, more establishing', where right of the bat we get to hear Delos's interest, relation to Ford, WHERE the control tower is in the park (seriously, we had to wait seven episodes on that one), and other things that really could have been signaled before.
Anyway:
I did accept that Bernard was going to be a host, but the how was still well done. The why however, eh. It's nice to see Hopkins go full Lecter, but it's a strange game when he rejected, or claims to, Arnold's views of the hosts. Is he trying to change the hosts or just maintain control of the park? He's clearly willing to murder for it (speaking of which: ehm, cleanup?), but I don't see what his motive could be if he's not trying to change the hosts or world. His speech against self-awareness would suggest 'no change', but then we have to ask what his new storyline is.
Also, it does create trouble with time (sigh. Aw my pride). Ford=Arnold is now thrown out, since it was going to be either one or the other in my mind.
And with the design drawings, which I believe are Arnold's work since the second is the boy, aging appears to be a 'clear' human property now. All models made by Arnold did not age since being build. It does raise the question who Dolores is / was to Arnold. Ford does say they're not friends ("at all"), so there is some type of conflict between them. She is the first host after all, even before Ford's 'family'. Ford's words in this episode about the peacock ("...self-loathing, guilt." With the emphasis on guilt) may be relevant. Maybe he used Dolores to backstab Arnold?
Additionally, William's route with Dolores appears to be in reverse of MiB's: the trees we saw him in with Teddy were the same as with the horse chase in this one, and I'm fairly sure we've seen that river bend before with MiB too, and Lawrence became the hangman outfit at the end there, so... yeah. Either that, or they ran out of money to have different sets.
I hope Elsie isn't gone, but the only other person who could have made extensive changes in hosts and spoken to them in the voice of Arnold, is probably the guy himself, so that's where we're at: "bitches I'm still alive". Does explain the doll house though.
But you'd think Ford would know about this since Elsie told Bernard. Eh.
Also I'm with the Bernard is Arnold's replica model. Ford did say he was very loyal, whereas he disagreed with Arnold's view.
And the line on 'how far these people are willing to go' does imply that all the butchers are hosts too. Would explain their shitty backstory. I mean, why would you hire humans for the maintenance part, giving direct access to your IP, when you have hosts in management to prevent that? Well, we're in CYLON? CYLON! territory now anyway.
I was imagining that the hosts may literally dissolve if they tried to leave the park. That might be fun. Such an extreme system could not be on Earth though. Not without a dome that is impossible to build. If the sky is meant to be real, then Westworld is on a terraformed planet. Wanna bet Dolores looking at the moon is going to turn out to be fake too? Probably Earth.