Here are the remaining plots that haven't resolve or have closure before the Krakoa age comes to an end:
1) What's happened to the Annihilation and what's next for her?
2) Would Nova revive and fight along with the Arrako yet there is no follow-up considering Al Ewing is leaving X-books soon and "Resurrection of Magneto" is more about Storm and Magneto.
3) What happens to the Alpha Flight team, would they get rescued or other teammates or remain locked up is up to the plot
4) How would Angel get brought back to life even without the Five involved?
5) Is S.W.O.R.D. disbanded or remain in active just without Abigail Brand?
6) Is Jean Grey going to be the ghost of Phoenix?
7) Would Old Laura would be free out from Synch's mind?
8) Would Cyclops find out what happen to the state of his brother, Alex consider he has become a zombie?