Interesting quote from the original IGN article breaking the news:
Sounds like Guggenheim is doing more than just paying lip-service to the idea of focusing on the core cast. The fact that he even referenced Rachel's narrative arc and Kingbreaker in interview is pretty amazing, in my opinion.Guggenheim: Hmm... You know, I would say a lot of the story's emotional core comes from Rachel. One of the other things I wanted to do was something that I don't think they really had as much of an opportunity to deal with in X-Men: Kingbreaker was the idea that -- and I guess it was Chris Claremont's third run on Uncanny X-Men -- the Shi'ar Empire was basically responsible for the deaths of all of Rachel's family. I wanted to come up with a story -- all the stories that I pitched to Mike and Dan, I wanted them all to have an emotional through line, so that, in addition to cool set pieces and fun plot, there would be a real, emotional anchor to each of these stories.
For the space story, Rachel and her family history is a big part of her, a big part of the story that deals a lot with themes of vengeance and how one honors the memory of their fallen family. So Rachel's very much at the core.
Positive on this, so far.