I think a good cause of action would be that all people who still have interest in the game and want it to be finished should contact Aaron directly via
ws@malfador.com. Using Shrapnel customer support is absolutely useless in this case. Maybe he'll realize that there's still a demand for a new patch if enough people email him. Another way would be to make a petition to Malfador or Shrapnel for another patch. We must take action if we want this game to be fixed, I think.