A friend and I were waxing hypothetical about how modern continuity would have been effected by Jean surviving Xorneto but not rebuilding Emma following the events of NXM 139. For me this comes down to how, or if, editorial would have taken Jean presence into account through the major arcs of the aughts and beyond. I think its clear that Messiah Complex and AvX would either not have occurred or played out a lot different. Other arcs like Schism and Utopia would be a lot harder to predict.
Would Scott and Jean's marriage have survived the affair with Emma? Would Jean have been able to temper Scott's more militant stand or would she have been right there taking the same stance through it all? In my opinion Jean would have been much more successful at bridge-building Scott's position with the rest of the X-men and perhaps even the Avengers then Emma ever was. Or she could have pushed him out of leadership completely? I think her presence would have significantly altered current continuity either way. What's your take on this?
And before the Emma fans come out swinging, this is purely a theoretical conversation. I am not advocating one way or the other.