It's been nearly a week and no subs have turned up. I could certainly continue postponing the game, but I doubt anyone is going to show up. What should we do about Pan? Setting him to AI would have a major impact on the game, but so would letting Pan stale into irrelevance. I don't think Pangaea disappearing is enough to end the game, at least not by itself, but it would be a major change in the flow of the game.
Honestly, I don't think there are any good options here. The good option was "get a sub", and it looks like that's not possible.
e: kind of a late edit, since Karlito (e2: and gman!) already posted, but I suppose I haven't tried Desura yet. given the amount of new blood there, there's a chance someone might want to try subbing.