The inclusion of Blindfold in the Age of X-Man may be for the same reason there's a Dani Moonstar in Prisoner X AND in Uncanny X-Men. I figured X-Man may have created a duplicate in his reality, either willingly or unwillingly.
Wind Dancer is powerless, so unless if she was repowered by Mothervine and we just didn't know about it then I can't see her joining.
I'm not the biggest fan of Cipher just because she's a Guggenheim creation.
Penance/Hollow would be fantastic though!