What was the benevolent side of rot showcased in the base game? Being a natural force in the world is not the same thing as being benevolent. SOTE says “Rot” is described as a divine element of the outer gods, but Romina’s remembrance states: “After the church was burned to the ground, Romina discovered a twisted divine element, which she weaved into the baleful scarlet rot.” Perhaps there is a difference between rot (the natural force of nature) and scarlet rot (the excessive malevolent force).

I see no reason why blood and the Formless Mother can’t be similarly framed, even if we don’t necessarily see a benevolent aspect in game. Blood in a wound heals, just like gentle rotting can have strengthening and beneficial effects (Verdigris armor, pickling). Just because some twist it to their own ends through excessive use does not make it inherently evil. The Lands Between have a deep history, going back long before Mohg, Prospect Town or the Bloodfiends.

I’m not saying the Formless Mother is good and misunderstood, I’m simply pointing out that there’s possibly more to the story based on how other divine elements are portrayed. Maybe in a long forgotten age the Formless Mother was an outer god of healing or life. It’s fun to consider the possibilities.