Today we learnt that Vassal is driven–apart from JAVA–by XML.
Having learn that, in less than 15 minutes, I was able to define ~30 pieces, each with 80 different layers and 30 corresponding stacks. If it wasn’t for my laziness, I could have had stacks in final locations–it would require to examine the map in any of dozens of graphic editors and note down the coordinates. Instead, I moves them manually and that was the only tedious activity of this day.
All hail Vassal developers!