In some ways I adore building in Sims 4 because it's a lot quicker and easier than previously. But then there are all these restrictions like what you've mentioned and it just drives me crazy. Like you also can't have a room on the same floor as a roof. I would love having a bedroom with a sloped ceiling because it's under the roof (I don't know if I explained that well). Lofts are also, as you mentioned, not really possible. And then there really should be ways to delete foundation from a section of the house. This game can be very frustrating at times for builders.
