Even for new Jericho, burning homes to the ground seems like an extreme move. Especially after the game details THREE major world wars and a near global extinction event. Does more destruction seem like a vaguely feasible solution in this devastated setting?
The only factions that should destroy the havens are the pure and the forsaken, factions which have progressively lost all semblance of humanity.
Pace treaties should also be possible when when faction has clearly lost against another.