He would have, for sure... especially since he said "Cable, Kane, Deadpool and Domino" would be a part of it...
So I imagine, James would remain dead, and Cable would take the leader position.
Deadpool would have been their enemy.
Domino would have replaced Heather.
And Kane would have replaced Madison.

And Rob would have probably revamped some of the Beta/Gamma Flight members, the way he did the New Mutants.