Surprised to see that Dunwall Tower is rendered too. I've always thought that we were meant to see more of it during the first mission but that it got cut along the way. There's some pre-release renders that show a rather pristine interior of the Tower that does not match the state its in during Death To The Empress, so I'm curious
Curious that they decided to model the unseen yard too, I wonder if the riverfacing facade of the Tower is also modelled in A Long Day in Dunwall. I still think we were meant to see more of the palace on the original first mission, there's a few pre-release images that show a few interiors before they got Delilahfied but that we never see in-game (in that state)
so the opening map is a bit complicated.
While the intro cutscenes are playing, here is what the Tower looks like as a whole: left is a copy of the throne room that gets used during the cutscene, right is the actual throne room set in its real place for when we get to explore it ourselves. (right image is the same view from the harbor side while you're in the playable Tower.) As you can see, neither of these are supposed to be seen from the side or from the river.
(Quick fun little peek behind the curtain: everybody hanging out in the respective throne rooms right at the start of the opening cinematic)
Here is what the outside of the cutscene throne room looks like - just enough there to make the little shot you get of Emily walking towards the doors work. Don't know why they only included one of the middle standing rows of columns. Interesting that they blocked off the doors though - I will expand on that at the end of this post.
Meanwhile the "real" throne room's outside looks like this (left during the cutscene, right during play):
What you'd see if you exited the door was this:
Once we transition to the streets map, the Tower changes to a version designed to actually be seen, but only from the side and below: here's what the roof and yard look like in this map.
From the river, here's what you'd see - first image is while you're in the tower, second two is while you're in the streets.
Plus bonus views from the Hound Pits Pub for funsies:
Circling back to those blocked off doors in the cutscene Tower - did you see how in the playable Tower version, they left the one door opening empty (and the other doesn't exist), and how in the streets version there just wasn't any door/opening there at all? In Death to the Empress, one of the doors - the left (from the river) one - is blocked off like the cutscene one but the right is not - there's a door here that we can't actually open ingame, but clipping into it we see that there's not actually the same kind of iron blocker behind it like on the other side and in the cutscene Tower, just a grey Template box. But that's the only difference between all these maps that made me go "hm why did they do that if you never see this in the first place".
So tl;dr: I'd say we can be sure that by the time they were building these maps they knew the player was not going to be walking out into the rooftop yard. That being said I haven't seen the screenshots you're talking about so if you could link them that'd be dope! :DD
ALSO UNRELATED SIDE NOTE THAT ISN'T WORTH ITS OWN POST: doing this made me realize that the decoration behind Delilah's throne in her painting is actually the (somewhat crown-shaped) decoration of the throne room yard balcony railing! Ain't that neat