The Celestial Madonna storyline with Wanda, Mantis, and Moondragon always made me wonder if Jean would have been a contender if that storyline wasn't...
No, Claremont never intended for her to be Scott's daughter. I've posted a lot about this before but Claremont said Rachel's "father" is the Phoenix....
The X-Men will always be Jean and Ororo's home teams. But I agree with Tom that these two are such fierce personalities that they tend to overshadow...
The Avengers don't have the X-Factor stigma. X-Factor is a B-List book, or has been ever since the O5 left it, while the Avengers are an A-List team...