Okay, so , let me try and crowbar my old characters back into the RP with new ideas.

What if the migrants have already left to start a new civilization before the start of season two. It's a small, quaint little farm town with cement walls surrounding it, creatively named New Arabia. It's only a few miles outside of the PL, maybe a day or two's walk. The two communities have stayed on good terms over the five years, making good allies. 

Isam ended up becoming the leader of New Arabia, because his people wouldn't take no for an answer. Omar migrated as well, taking his crops and farming with him. New Arabia does a good business with the PL, trading medicine, crops, and horses and livestock. So far, the little town is up and coming pretty quickly.

However, a new foul stench is brewing out in the wasteland. The remnants of the neo nazis are slowly banding back together, and have their eyes set on the smaller, weaker town of New Arabia. If they succeed, they will have the means and the will to take on the PL before they fully recover from the last war.