I had an interesting idea based 2000 years after SB, The Age of the Reckoning.
Just before their war with the Trow the Callieach fought an even greater foe, the Legions of the Dark Gods. This were the creatures created by the Dark Gods which were to destroy the Children of Wyrd. Slowly the gained power in the East until the Struck, however the Callieach fought back and after hundreds of years of war the Callieach are unable to win outright, so with the Help of the Forest Giants the build a gigantic impenatrable forest around the Dark Lands, imprisoning the legions of the Dark Gods. And so time passes until the Leveller of the New age figures out how to 'ungrow' this Forest and releases the legions of Death, with giant Balrog like guys, but without wings and flames, but with big maces, etc.
The Trow however get an uncomplete message from Nyx and are unsure of what it means, some believe it syas to fight for the Dark Gods, others believe, since she was cut off mid sentence that the Dark Gods have killed her and they must seek vengance so join the Light. So this creates a split on the Trow, some carrying the old style Hammer and armour. The Light Trow, wearing light armour and using swords.
The War pans out lasting 500 years, during which the Myrkridia are wiped out again and the The Trow wipe each themselves out in a massive battle. The war ends when the LEveller is defeated and the spirit of the Leveller made coporeal and then slayed, finally killing the entity forever. Out of his ashes the hero extracts the last of the 49 dreams and completes the one Dream thus bringing an end to the cycles and allowing the world of Myth to continue to develope naturaly.....
