I feel like I've witnessed something like this before... not that I'd PERSONALLY know... By the planes, no! Getting a blood war started in your cosmology is certainly no laughing matter, berk. Once it starts, it ain't ending any year soon. But, if you have a need to have those forces battle it out, I'm sure daemons can serve an important role... Not that I'd personally get involved, I have a business to attend to! Also, top tier mythic sounds like an option for going against the worst of the worst in AP 6. I dunno how it would play out, but color me intrigued...