After reading HOX 4 all I could think of was why when you have almost all mutants to pick from for the team your pick was so poorly equipped for such a mission
Cyclops - field leader
Polaris - while not currently listed as an Omega like her father shes def powerful and has lots of space experience and if im going against a metal space station why not
Darwin - we know he can survive the vacuum of space and with his intelligence could easily be the liaison for any science division
Firestar - with her powers unfettered by the limits of earths atmosphere she could easily have been one of the best assets for a space mission
Vulcan - single handed flew through space and scrapped Shiar warships
Lifeguard - like Darwin her powers evolve to save the lives of those around her and herself. Has also had space experience
Sunfire - after upgrades with Apocalypse can generate his flames in space and who better to have on a mission close to the sun
Domino - pilot because who doesn't need a little bit of luck on a space mission
Exodus - why take just one Omega when two could be better
Lila Cheney - never go into space without a back up ride home
Just again why anyone would take Angel or Husk to space is beyond me