Amount of Enterable Buildings and the Minimap
So, I'm not sure if this was confirmed or if it was simply a rumor, but I remember seeing some people saying that the buildings with accessible interiors throughout the map would show up in 3d on the minimap.
In the latest leak, pretty much every building in that area is in fact in 3D, including the exact building Lucia enters for the stunt.
If this is how it works, then I'm not surprised how they said the world is supposed to be 11x more dense than V's