As long as I have "New Random Seed on Reload" checked, I can simply quicksave, and my missionaries and executives will always spread if I'm patient. So it's a waste of time. If you'd like, you could make it so that I only have a 100% spread chance if I have "new random seed on reload" checked, since that's the only time when it's not a cheat. Maybe it's a simple XML change. If so, just tell me what to do.