As has been harped on before, you might want to try it. I was thinking that a sort of add-on to Safety is possibly taking something from FfH in the way of their Armageddon Counter (AC).
Now in FfH the AC unlock bad things as the counter goes up. I was thinking that perhaps this could be switched to something like the 'Civilization Counter' to represent how much people feel about the world in general. After 9-11, we saw here in America the attitude of "These are dark times and we need to protect ourselves" and so we allowed ourselves to junk a lot of our freedoms. After the Apocalypse, I would think that there would be people who would think we can't "afford" civilized things like "law, order, trail by jury" et al and so some Civ's would regress pretty badly. So instead of civilization growing back, it falls further into Warlordism and Tyranny.
So (sorry for long post) you could have the 'CC' that would start either in the negatives or at 0 and certain actions by the different Civ's would lower, or raise the CC. I was thinking that certain Civics like slavery would lower the CC as well as raising cities, raiding towns and other 'evil' acts. In most mods, captured slaves can be used as workers, disbanded for hammers toward a project or sold like in FfH for gold. Maybe you could also have them eaten for a boast in happiness for a city, which would lower the CC as cannibalism is usually rather frowned upon. I mean if the world is going to hell, a lot of people would look the other way just as long as they were clothed, fed and happy, no matter that their leader is a a crazy despot.
However, certain things might raise the CC and if the CC got higher, it would cause more unhappiness in 'evil' cultures sort of like Republic does. I think no matter how bad things get, if one Civ is that "Shining City on the Hill" it gives ideas to the downtrodden. Perhaps it would also unlock certain buildings or units and maybe even Wonders like the New League of Nations or something that would allow a Diplomatic victory or maybe something like the Overcouncil in FfH.
I'm sure this might be a lot of work, but it would also allow a bit of "Good" versus "Evil" in the game and might also be used to unlock events depending on how things go. Sure in a game like this, it can be easy to run your Civ like a bastard, throwing enemies into the fire and the like, but there should be a penalty. Maybe you could have units defect (moral leaders) or units go barbarian, (I should be leader, not him!) and obviously if the CC gets high, the citizens will want more comforts, less war
