Originally Posted by
Narasinha
Madelyne was nothing until they decided to bring Jean back and made Madelyne one of the central element in that story. She was just a random Jean's look-alike that was supposed to provide a way to retire Scott from the comics and would only have been mentioned every so often.
As for Jeen, yes, she isn't Jean. But she has the possibility of becoming her or, at least, becoming someone similar. She isn't Jean but she isn't a totaly new character either: She is interesting because of the "potential". Because we know, and the characters in the comics know, what she may become, what she may do. Other characters can't have the same relation with her as they had with adult Jean but they can't either ignore what they shared with her either. They can't help themselves to see her adult-self when they look at her. It's even more true for the characters that actualy already knew her. After, it's up to the authors to depict those relations or to totaly ignore the situation. But the potential for good stories is here.