I always wondered why even vastly superior besieging armies have to lift the siege and retreat to the ends of the earth when all siege engines are destroyed during an assault. Little did I know of the implications...
My nostalgia trip ended harshly on opening turns as Sicily VH/VH, when assaulting Cagliari in Sardinia.
Lost faction heir and the whole of his knightly army simply because the single sad battering ram caught fire.
Leave the ships to wait by the shore next time. In case the knights want to go home and cry if their ram burns.
Should be easy to conquer next time though. Peasants behind the palisade probably died of laughter anyway.