My biggest problem with the idea is the fact the Blood War ended because someone found out the Good Gods manipulated the Fiends. All I have to say is duh. It doesn’t take a rocket scientist to see whom the Blood War favors. It doesn’t matter how it started the demons and devils will fight because the other side exists. To stop the Blood War you would need to change their very nature.
I would suggest that the “discovery” that the Blood Wars were started by the good gods to be a ruse. What is really happening is that someone, Perhaps the General of Gehenna, perhaps someone else, has created an artifact, powered by a god of peace, trapped inside. I would further suggest that the Demons and Devils do not side with each other, but pretty much leave each other alone. So you would not have one enemy, but two and a third enemy manipulating the first two.
I would suggest that the “discovery” that the Blood Wars were started by the good gods to be a ruse. What is really happening is that someone, Perhaps the General of Gehenna, perhaps someone else, has created an artifact, powered by a god of peace, trapped inside. I would further suggest that the Demons and Devils do not side with each other, but pretty much leave each other alone. So you would not have one enemy, but two and a third enemy manipulating the first two.