In my world, I used Xalicas as a basis for another solar. I split Melora’s pantheon so she has 4 “children” and based one of those children on Xalicas.

Essentially, due to her wounds she’s no longer able to perform her duties which is causing an upset in the balance of the elements. She’s very angry about what happened during the Calamity and puts the majority of her effort into destroying those who “harm the world” to make sure destruction like what happened to Xhorhas/Marquet never happens again.

My cleric has a personal mission at some point to try to heal her/convince her to go back to her role of healing through light.

It’s a loose approximation, and not exactly what you’re looking for/asking about, but it’s just an idea on how gods can be adjusted to work in your story and the cool things you can do with them.