Okay, Alpha Flight, much as we love it, isn't quite a "flagship" team like the Avengers, Fantastic Four, or X-Men.
And they're not the only awesome team that exists below the radar...
My personal favorite?
Mystique's "get out of jail free card" for her Brotherhood was one of my favorite developments in marvel's history.
They got enough page space that characters like Blob, Pyro, and Avalanche got to display some depth of personality, and then the addition of oddball characters like Super Sabre, Stonewall, and Crimson Commando later on gave the group a few tweaks.