'Silo' season finale: book reader discussion

Overall I think it was decent and I like a lot of the additions they made. Some of the episodes in the middle were very filler-y and kinda boring. But I wasn't a huge fan of the reveal in the show vs the books, for the screen and especially for the tape. The heat tape is like the determining factor here and they really glossed over it. I'm not sure if I would have gotten it if I didn't read the book.

However there are still mysteries, I was wondering where they were going to go with Lukas since he got busted in the last episode. Now he's going to the mines??? Who is she going to talk to over the radio now? Also where do the mines go to avoid other silos lol? Although I'm not really mad about the change if Lukas doesn't end up being Bernard's shadow. In the book it was very "hey you random dude, be my shadow now suddenly"

And what about that mystery door? Are they connected to the other silos somehow? Bernard seemed kind of surprised when Jules mentioned it and said there were many mysteries... I wonder if he actually knows anything about them or not. I was surprised Sims didn't know about the fake helmet screen, but I guess he wouldn't know that if wasn't actually Bernard's shadow yet. I really question if he will actually end up being Bernard's shadow though...