It would be great if there was an option for a Commander Icon visible only for the guild he is in,it would allow for greater tactical operations on the maps.
The usual Commander Icon could use some improvements too,because the way it is now,people just buy it and think they know how to lead a group but sadly that is not so. Maybe there should be an WvW achievement that would have tiers,and there would be an icon change for every tier,somewhat like army ranks.That way we could tell how experienced in WvW the given commander is.