Yes, if I want to fill in a part of the roof, that is on a design layer, with a hatch, let's say, that's being shown in elevation in Hidden Line, I can use the fill bucket mode of the polygon tool and do this in the Viewport Annotation window.
Or if I want to put a heavy outline around the whole building elevation, I can use the Lasso mode and that works as well, and again, on objects from different layers as being shown in the viewport. Sometimes the lasso mode does funny things like wrap around shapes within the larger shape but is easily cleaned up with the reshape tool. But like I said before, it sometimes doesn't work at all and I don't know why.