>>717795679 (OP)
He couldn't fix the world by himself, so he thought he had to use raw strength as his manipulative powers were limited. But he used everything he could, rejecting everything that made him tangible to ascend after charming Mohg into giving his body for Radahn's also charmed spirit, embodying him as his consort. Since GRRM likes forced weddings, the lands between work in a similar way with godhood. You become intangible and let a mortal champion of your choosing force your worldview on everyone else. Faquella had good motives but everyone would bow down from fearing Radahn destroying everything, which would make the entire "kinder world" thing very forced and even more tyrannical than Marika's golden order.
All he wanted were for the omens, albinaurics, misbegotten and every other shunned races to be accepted. His problem was behaving like a liberal woman.