I looked through Restoring the world after a global apocalypse a few minutes ago, and noticed the apocalypse tag. It suits the question, but the question itself isn't so much about the apocalypse as events after the apocalypse - as you can imagine.
There are a whole bunch of other apocalypse questions - and many are in the same vein as this one - that are really post-apocalyptic. Therefore, I propose a tag for them, phrased as either
or, in keeping with apocalypse,
Is this a good idea?