I both agree and disagree.
Some of the characters introduced into Alpha Flight were just not rigth for the book - as characters, they were fine, just not for Alpha Flight, or that version of Alpha Flight. There are no bad characters, just bad writers.
Decisive direction and good writing - agreed. Somebody who understands comics in general, somebody who understands how to write intriguing and 'real' characters, and somebody who is a bit of a visionary (no, not somebody who bringsa back Vision and Scarlet Witch either, lol); that is what AF needs.
As has already been said here, i think the most imprtant thing for a re-launch would have to be guest appearances. The team has to be imposing, mysterious, heroic, and leave people wanting more. Thta, IMHO, is far more important than whether the team members are original members or not. When Byrnbe first started this crazy trip we call Alpha Flight, how many of the members were established heroes with back stories?
Right - none.
He introduced them in X-men appearances, and the people loved them. They didn't know who they were, but they desperately wanted to. And that is the sort fo writing we need again. Not Byrne, but somebody who can do that in the modern age.