Mutants are Fox only. So you couldn't do Alpha Flight unless Fox does it since they have Northstar and Aurora. I think it is a possibility for Northstar or Aurora to appear in an X-Men or Wolverine movie. We also saw the name "Hudson" in the first Wolverine movie (Fox) and names listed of Alpha Flight members and teams in X-Men 2 from 2003 (Fox), that's it for now. Unless something incredible happens.