Apologies if this is already an idea, I did a search and was shocked that I couldn't find anything (other than one post that lumped too many ideas into a single post). The idea is in the title, create ceilings by massing face, like we can with walls, floors, and roofs. We do a lot of complex ceiling shapes that would be infinitely easier if we could engage the conceptual modeling environment to achieve this. I understand that I could simply make my ceiling out of a roof, but then it would be in the wrong category and I like my models clean. I like the "by face" tool because it preserves the layers of the system family (rather than modeling the ceiling out of raw geometry).