I don't think your idea would work in an ortho projection (like the one in the drawing). If the two horizontal bars were separated vertically you would have to

I don't think your idea would work in an ortho projection (like the one in the drawing). If the two horizontal bars were separated vertically you would have to see a space between them instead of the them sharing an edge. You idea should work if there is perspective distortion involved and the top bar is closer to the viewer and is also longer than the other.