Sorry to bring this back up again but I remembered one of the worst features of Civ4 espionage that I really hope doesn't make it into G&K. Remember in the latter versions of BtS where you could turn espionage off? What they did was massively boost the cultural levels needed for such a win? I know we don't have cultural levels in Civ5 but what would be the game penalty be for not having espionage on in G&K? I hope the game is balanced as if espionage was just a terrible idea to add into Civ5. In other words, not having espionage on would make it just like it is now (all other things being equal) and none of the civs, buildings, diplomacy, etc. would even know that it's missing.