Rangers are no longer the masters of storm and darkness navigation. This code has been reworked to include a new skill, direction sense. This skill has been given to several subguilds in addition to the ranger guild. It takes into account multiple things, including a particular type of worn object that until this change only gave role-played benefits for storm navigation.
Please discuss this change here: http://www.zalanthas.org/gdb/index.php/topic,38256.0.html