Of war without victory
My major problem with the notion of 4GW is that it isn't 4GW; it's that it's 0GW V. 2.0. It's simply a descent into / reversion to barbarism, with no redeeming virtues that I can see. For example, how does one make peace in a world of 4GW? The simple answer is you don't, indeed, you don't even know who to make peace with, and even if you do he's unlikely to be able to control his movement to the point that there will not be splitters to continue the war.