Would love the addition of Cable, but keep Fantomex over Maverick. Magik and Sabrewolf I could do without. Archangel's out, sadly. I'd like to see the return of the Six Pack, even though only Domino and Hammer are left (besides Cable).
So my line-up would be:
Archangel (can't happen, so who else would be good for the air?)
and Hammer, for intel and technology
Wouldn't mind AoA Nightcrawler sticking around, and I'd still want to book to be done by Remender, but Jeff Parker or Nicieza would fit my needs.