So this is good for the DEM / Ortho, but the preference would be for the background map to be displayed in the model view as the main need. This way when images are imported and even reprojected, we can validate that it is being done properly. Same with when control is imported, all this is done in model view so having the background map there would be preferred.
It is almost too late in the game to have the background map at the DEM / Ortho view stages, as all the project info is typically set prior to this.