Just to be clear, I'm not referring to the roundel interior doors. Instead, I think it would be cool to have a roundel door that functions in the same was as a corridor door, or maybe just a standard wooden door. It'd be a way to have 'concealed' rooms in your console room and beyond, without having to have an opening in the wall. It would prove for a smoother transition between the console room and corridors.  There could be variations on the door depending on what roundel is being used, such as the Hartnell, Ruth, or Coral doors. 

Just an idea I think would be cool to have in the mod at some point. I think it would be relatively easy to implement if the devs want to.