I can see Hope flying off into the narrative sunset at the end of this, and I would not be shocked if they sent the rest of the Five with her. The way they've built them up as so close and seeing each other as a family unit, if beating Enigma requires some kind of sacrifice like Hope staying in the WHR while Jean returns to the mortal plane, I could see them writing out the rest of the Five at the same time with them choosing to stay by her side and keep her company so she won't be alone, etc, etc.