Yeah, I think Firestar has the potential to really tell some interesting stories on the team that ultimately reinforce why Krakoa is great as the team brings her in on the idea.
I also feel like Firestar's spot should not have been make or break for how diverse this team was -- it should not be incumbent on fans to have to fight for any characters of color to show up on the cast of the book. The other spots were set before Angelica and should have been diverse with or without her. If the team is mostly white they better not blame the fans for it.