I have not seen a vassal module for this or the next ATO game in this 'series' (Birth of a Legend). Does ATO have anything against creating vassal modules for their games?
ATO leaves the electronic rights to the designers. Basically they leave all the rights except the version that is sold in the magazine with the designer. They have said this many times in their consimworld folder.
As the designer I grant permission to anyone who'd like to design a Vassal or Cyberboard module of either game, assuming of course that nothing is charged to others using said modules.