I had an idea about that. Although I personally prefer the open air version, you might be able do both on the same model. Depending on a switch position on the radio, you could just hide it within the plane. I'm not sure if you can get enough movement in the editor for that to work, and I'm not sure if the fuselage is big enough to hide it somewhere. You would probably have to rotate it and move it. I was originally thinking about this is terms of two versions of the observer in my FE2b, one sitting, and one standing and manning the backwards gun (I can't afford the polygons even if I could find the space, but it was an idea).