Allow for 360 degree symbol movement. Specifically the arrow symbols - have the ability to rotate the arrows a full 360 degrees.
TNP can already do this.
Right click on the desired Marker and choose Edit Marker.
In the Symbol section of the Edit Marker window, set the Rotate value to whatever degrees you desire.
You can also do the same with symbols at waypoints within a route, or with symbol lines that make up a route.