looks really good, there are other ways to get a zonerect as long as you know the max east, west, north and south coordinates of your locs, you can then match those to the x and y coordinates on the resulting image. See
http://www.eq2interface.com/forums/showthread.php?t=963
Also can somebody check to see if this uses the same IOPlan as Crypt of Agony I know that the epic map is a visually a subsection of the crypt map.