At this point I think Endsong is probably retconned
Between Cyke and Emma, I thought emma was the level headed in the beginning all things considering, she did state to cyke that it was Hopes choice and cyke shot it down.
I think it'll be her and Scott fighting over the case of Hope
Scott left her in her time of need to seek Hope and Emma needed him at that point.
Hope and Emma never had good re pore with one another so I'm sure when Scott gets his hands on her and brings hope to Utopia where the final battle will occur that it'll be because of Hope that emma will go all out and scott will kill her.
Edit: Scott comes out the Hero smelling like roses, Avengers will get bad viewing from the public and mutants will be worse off than when they started of being "hated and feared"