Jorb, The way you set up this little end of the world game is rather stupid. Sure you give the power to the players but now a lot people are not going to bother playing the game till the world reset. Just look at your player count now. The others and I don't even want to play the game now. This was the 1st game that we got everyone I know to work together. My small group of 8 haven't learned steel, so we cant even track down a alter let alone do anything about destroying it.
In short people will not want to play the game till the world is reset, and added randomness of when the world is going to end makes it much worse when we are just waiting for the reset that's going to happen anyway.