Oh Constance I know that.. that where it's really sad because they are so pleased with the mess they've done that they don't want to change it....I do think they really know very well how popular Jean is, and how her return will affect that silly fan fiction that is the cyclop/white queen show...bringing back Jean and everything start to collapse...if well written...
They are very happy with their status quo and absolutely don't want to change it...They will not admit how much OF a game changer Jean is...so they are giving her heritage to some other character which mean they can still try to bank on the red head with the phoenix without having to change things...

www.deviantart.com/deviation/51360088/