One guy on the thread hated the Cowboys because of the Vikings loss in 75, the Packers hated the Cowboys because they put them out of the playoffs three straight times in the ninties, the Steelers hate O'Donnell more than they hate the Cowboys, the 49ers have actually lost more title games to the Cowboys than they've won.
As I noted earlier, though, several Cowboys players aren't counted because they made their names with other teams. I also think the Hall of Fame has kind of an affirmative action policy. A good player on a team that hasn't had success is going to get in faster than a player on a team that already has representatives.
During the sixties-seventies, there was definitely a prejudice against the south and west in the NFL. Except for the 49ers and Rams (49ers started in All-American Football League and Rams moved from Cleveland), there wasn't an NFL team west of Chicago/Green Bay or south of the Mason-Dixon line. The NFL only expanded because of pressure from the AFL (the Cowboys, Saints, Vikings and Falcons were created to keep the AFL from getting market share, not because the NFL wanted them). For the first about fifteen years after the expansion, there was definitely a northeastern slant to both the officiating and the commentating.
Your entire post is right on, Doc. BTW did you ever catch that one-armed 49ers fan?