So, sometimes it is uncomfortable to have no ability to see where center of your orbital camera located. With such limit it is only comfortable to use orbit camera only on high distance from object. But have no sence on close look - because i have no ability to center my camera on 10pixels river, or another object in world
I really want to suggest add kind of central dot for orbit. Like in other 3D software (aka Blender). Because currently it is blind fighting with WASD keyboard buttons