I'm working on a map conversion utility that handles step 1 better and supports other map formats (goodbye perl requirements). Also has waypoint converters and makes a seperate calculation for zonerect obsolete (goodbye Excel requirements). It's also a Win32 app (goodbye DOS proficiency requirements).I used it to re-create the sundered splitpaw den under different scaling so you have a 5% margin around the map and it works excellent.
It's not ready for release quite yet, but here's a screen shot of what works so far:
