I hate that we'll never get to see Crystal and Luna involved with the House of M anytime soon. I really loved Crystal's interactions with Lorna in space and it was really neat for Crystal to be sort of connected to nearly all the "big" families in the MU (Inhumans, HoM, F4).
On a side note, Crystal, Scarlet Witch, and Polaris would make quite a powerful trio.
PAD did such nice things towards the end of that title. *sniffle*
Seriously though, as a fan of that ship, I still don't see them getting back together anytime soon. What I would like to see Marvel do more of is portraying the two of them as a functioning family with shared custody of their daughter. Like I said earlier, part of what makes me like them together is their real world relation and I think showing them separated (but both as care-givers) would be something different and interesting in superhero comics.