You pose a great question. Honestly, I wouldn't have made a distinction between her mutant and so-called god powers. Because, let's be real, Storm already has a deep powerset that few writers, if any, have fully explored. Why add god powers onto that? For me, it would've been easier for everyone involved to simply write that her mutant powers increased, strengthened, whatever. Maybe, as we talked about already, she is more durable, has greater stamina, perhaps even more control over her powers or elements on different planets. It makes more sense, IMO, to stay as close to her original powerset as possible.
But I don't know where Coates plans to go with her godhood but I'm hoping for simplistic over complicated. The more complicated it is the even less chance other writers will write Storm as a goddess.