Aengdar_StanceBarReorder
This AddOn allows reordering of the stance/shapeshift icons on Blizzard's shapeshift bar.
Simply drag the stance icon you want to move and drop it onto the stance you wish to swap it with. Note that you must keep the mouse button held down and complete a drag by releasing the mouse button - you can't drop the stance into the new position by clicking on the target icon.
If your action bars are locked hold down the shift key in order to enable dragging.
I hope you find it useful!