In 3D scenes, one can rotate the map by middle-clicking and moving the mouse. It would be great to have this same functionality in 2D maps.
Moving between 2D and 3D in a project -- particularly one with linked views -- this lack of functionality is a bit jarring. In 3D, I frequently rotate my view but then when I jump back to 2D I become extremely disoriented because north is no longer up and there is no easy way to spin the map back around. A button to set the current map's rotation to zero could also alleviate this.