Well this is officially dead. My collegue has consistently missed every deadline he's set for this project for the last five months. He even claimed to have posted auditions online, but somehow they were invisible. Drat.
I think the idea has some potential, but I myself do not have the overarching passion for it to be the driving force behind an audiodrama production.
I might take the two complete scripts and the two outlines, and maybe write a fan-fiction novella or something.